{"title":"Imperial BSPT Socket Pipe Plugs (DIN 906) - Marine Stainless Steel (A4)","description":"\u003ch2\u003eImperial BSPT Socket Pipe Plugs - DIN 906 | Marine Stainless Steel A4 (SUS316) | A4-70 | Pickled \u0026amp; Passivated\u003c\/h2\u003e\u003cp\u003eFULLERKREG DIN 906 imperial BSPT (British Standard Pipe Taper) hexagon socket screw plugs in \u003cstrong\u003eA4 marine-grade stainless steel (SUS316 \/ EN 1.4401)\u003c\/strong\u003e, \u003cstrong\u003eA4-70 strength grade\u003c\/strong\u003e, \u003cstrong\u003epickled \u0026amp; passivated\u003c\/strong\u003e surface finish. The premium choice for self-sealing port closures in saltwater, chemical, and aggressive industrial environments. BSPT (R thread, ISO 7-1) tapered thread creates a self-sealing interference fit on tightening. Internal hexagon socket drive allows flush or recessed installation where external wrench access is restricted.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eProduct Overview\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard:\u003c\/strong\u003e DIN 906 (Tapered Hexagon Socket Screw Plugs)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard:\u003c\/strong\u003e BSPT - British Standard Pipe Taper (ISO 7-1 \/ R Thread)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type:\u003c\/strong\u003e Tapered pipe thread - self-sealing by thread interference\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e A4 Marine Stainless Steel (SUS316 \/ EN 1.4401)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrength Grade:\u003c\/strong\u003e A4-70 (ISO 3506-1)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface Treatment:\u003c\/strong\u003e Pickled \u0026amp; Passivated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive:\u003c\/strong\u003e Internal hexagon socket (Allen \/ hex key)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize Range:\u003c\/strong\u003e R 1\/8 to R 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e FULLERKREG\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eDimensions - DIN 906 BSPT \/ R Thread (Marine Stainless Steel)\u003c\/h3\u003e\u003cp\u003eAll dimensions in mm. Per DIN 906 standard for BSPT plugs. h = plug height, k = socket depth. Weight in kg\/100pcs.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eThread (R)\u003c\/th\u003e\n\u003cth\u003eTPI\u003c\/th\u003e\n\u003cth\u003eThread OD (mm)\u003c\/th\u003e\n\u003cth\u003eh (mm)\u003c\/th\u003e\n\u003cth\u003ek (mm)\u003c\/th\u003e\n\u003cth\u003eS\/AF (mm)\u003c\/th\u003e\n\u003cth\u003eWeight (kg\/100pcs)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eR 1\/8\u003c\/td\u003e\n\u003ctd\u003e28\u003c\/td\u003e\n\u003ctd\u003e9.728\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eR 1\/4\u003c\/td\u003e\n\u003ctd\u003e19\u003c\/td\u003e\n\u003ctd\u003e13.157\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eR 3\/8\u003c\/td\u003e\n\u003ctd\u003e19\u003c\/td\u003e\n\u003ctd\u003e16.662\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eR 1\/2\u003c\/td\u003e\n\u003ctd\u003e14\u003c\/td\u003e\n\u003ctd\u003e20.955\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e7\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eR 3\/4\u003c\/td\u003e\n\u003ctd\u003e14\u003c\/td\u003e\n\u003ctd\u003e26.441\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e18\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eR 1\u003c\/td\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003ctd\u003e33.249\u003c\/td\u003e\n\u003ctd\u003e12\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e12\u003c\/td\u003e\n\u003ctd\u003e35\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eR 1-1\/4\u003c\/td\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003ctd\u003e41.910\u003c\/td\u003e\n\u003ctd\u003e12\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003ctd\u003e14\u003c\/td\u003e\n\u003ctd\u003e39\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eR 1-1\/2\u003c\/td\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003ctd\u003e47.803\u003c\/td\u003e\n\u003ctd\u003e12\u003c\/td\u003e\n\u003ctd\u003e12\u003c\/td\u003e\n\u003ctd\u003e17\u003c\/td\u003e\n\u003ctd\u003e63\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eR 2\u003c\/td\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003ctd\u003e59.614\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003ctd\u003e12\u003c\/td\u003e\n\u003ctd\u003e19\u003c\/td\u003e\n\u003ctd\u003e39\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003e\u003cem\u003eS\/AF = internal hex socket size (Allen key size). Thread OD per ISO 7-1. Dimensions per DIN 906 standard for BSPT plugs.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eBSPT Thread Reference (ISO 7-1 \/ R Thread)\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eThread (R)\u003c\/th\u003e\n\u003cth\u003eTPI\u003c\/th\u003e\n\u003cth\u003ePitch (mm)\u003c\/th\u003e\n\u003cth\u003eMajor Dia. (mm)\u003c\/th\u003e\n\u003cth\u003eTaper\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eR 1\/8\u003c\/td\u003e\n\u003ctd\u003e28\u003c\/td\u003e\n\u003ctd\u003e0.907\u003c\/td\u003e\n\u003ctd\u003e9.728\u003c\/td\u003e\n\u003ctd\u003e1:16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eR 1\/4\u003c\/td\u003e\n\u003ctd\u003e19\u003c\/td\u003e\n\u003ctd\u003e1.337\u003c\/td\u003e\n\u003ctd\u003e13.157\u003c\/td\u003e\n\u003ctd\u003e1:16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eR 3\/8\u003c\/td\u003e\n\u003ctd\u003e19\u003c\/td\u003e\n\u003ctd\u003e1.337\u003c\/td\u003e\n\u003ctd\u003e16.662\u003c\/td\u003e\n\u003ctd\u003e1:16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eR 1\/2\u003c\/td\u003e\n\u003ctd\u003e14\u003c\/td\u003e\n\u003ctd\u003e1.814\u003c\/td\u003e\n\u003ctd\u003e20.955\u003c\/td\u003e\n\u003ctd\u003e1:16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eR 3\/4\u003c\/td\u003e\n\u003ctd\u003e14\u003c\/td\u003e\n\u003ctd\u003e1.814\u003c\/td\u003e\n\u003ctd\u003e26.441\u003c\/td\u003e\n\u003ctd\u003e1:16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eR 1\u003c\/td\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003ctd\u003e2.309\u003c\/td\u003e\n\u003ctd\u003e33.249\u003c\/td\u003e\n\u003ctd\u003e1:16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eR 1-1\/4\u003c\/td\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003ctd\u003e2.309\u003c\/td\u003e\n\u003ctd\u003e41.910\u003c\/td\u003e\n\u003ctd\u003e1:16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eR 1-1\/2\u003c\/td\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003ctd\u003e2.309\u003c\/td\u003e\n\u003ctd\u003e47.803\u003c\/td\u003e\n\u003ctd\u003e1:16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eR 2\u003c\/td\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003ctd\u003e2.309\u003c\/td\u003e\n\u003ctd\u003e59.614\u003c\/td\u003e\n\u003ctd\u003e1:16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eMaterial \u0026amp; Mechanical Properties\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e A4 \/ AISI 316 \/ SUS316 \/ EN 1.4401 - Austenitic stainless steel with molybdenum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMolybdenum Content:\u003c\/strong\u003e 2-3% Mo - key differentiator providing superior pitting and crevice corrosion resistance vs A2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrength Class:\u003c\/strong\u003e A4-70 per ISO 3506-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTensile Strength:\u003c\/strong\u003e 700 N\/mm2 min (101,500 PSI)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProof Load Stress:\u003c\/strong\u003e 450 N\/mm2 min\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness:\u003c\/strong\u003e HV 220 max\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface:\u003c\/strong\u003e Pickled \u0026amp; Passivated - removes free iron, maximises chromium oxide passive layer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenerally non-magnetic\u003c\/strong\u003e in annealed condition\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eSurface Treatment: Pickled \u0026amp; Passivated\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePickling:\u003c\/strong\u003e Acid treatment removes heat tint, scale, and free iron contamination from manufacturing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePassivation:\u003c\/strong\u003e Rebuilds dense chromium oxide (Cr2O3) passive film for maximum corrosion protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResult:\u003c\/strong\u003e Bright silver-white surface with maximum corrosion resistance\u003c\/li\u003e\n\u003cli\u003eNo dimensional change - thread tolerances fully maintained\u003c\/li\u003e\n\u003cli\u003ePer ASTM A967 \/ ISO 16048 passivation requirements\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarine-grade corrosion resistance:\u003c\/strong\u003e 2-3% molybdenum in SUS316 dramatically improves resistance to chloride pitting - essential for saltwater, coastal, and offshore environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-sealing BSPT tapered thread:\u003c\/strong\u003e 1:16 taper creates interference seal on tightening - no sealing washer required in most applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal hex socket drive:\u003c\/strong\u003e Allen key installation allows flush or below-surface fitting - ideal where external wrench access is restricted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact low-profile design:\u003c\/strong\u003e Minimal protrusion above mating surface\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA4-70 strength:\u003c\/strong\u003e High strength combined with maximum corrosion resistance for demanding environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical resistance:\u003c\/strong\u003e Resistant to many acids, alkalis, chlorides, and industrial chemicals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide size range:\u003c\/strong\u003e R 1\/8 to R 2 from stock\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eA4 (SUS316) vs A2 (SUS304) - Why Choose Marine Grade?\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eA2 (SUS304)\u003c\/th\u003e\n\u003cth\u003eA4 (SUS316) - This Product\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBase Alloy\u003c\/td\u003e\n\u003ctd\u003e18% Cr, 8% Ni\u003c\/td\u003e\n\u003ctd\u003e16% Cr, 10% Ni, 2-3% Mo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMolybdenum\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003ctd\u003e2-3% (pitting resistance)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSaltwater Resistance\u003c\/td\u003e\n\u003ctd\u003eModerate\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChloride Resistance\u003c\/td\u003e\n\u003ctd\u003eLimited\u003c\/td\u003e\n\u003ctd\u003eSuperior\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical Resistance\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eVery Good\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStrength Grade\u003c\/td\u003e\n\u003ctd\u003eA2-70\u003c\/td\u003e\n\u003ctd\u003eA4-70\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003eGeneral industrial\u003c\/td\u003e\n\u003ctd\u003eMarine, chemical, harsh environments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eBSPT vs BSPP - Know the Difference\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eBSPT (This Product)\u003c\/th\u003e\n\u003cth\u003eBSPP (Parallel)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Form\u003c\/td\u003e\n\u003ctd\u003eTapered (1:16)\u003c\/td\u003e\n\u003ctd\u003eParallel (cylindrical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard\u003c\/td\u003e\n\u003ctd\u003eISO 7-1 \/ R thread\u003c\/td\u003e\n\u003ctd\u003eISO 228-1 \/ G thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSealing Method\u003c\/td\u003e\n\u003ctd\u003eThread interference - self-sealing\u003c\/td\u003e\n\u003ctd\u003eFace seal (collar + washer\/O-ring)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSealing Washer\u003c\/td\u003e\n\u003ctd\u003eNot required\u003c\/td\u003e\n\u003ctd\u003eRequired for pressure sealing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReusability\u003c\/td\u003e\n\u003ctd\u003eLimited - taper deforms slightly\u003c\/td\u003e\n\u003ctd\u003eExcellent - no thread deformation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterchangeable?\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003eNo - do not mix BSPT and BSPP threads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMarine and offshore equipment - hull fittings, seawater systems with BSPT ports\u003c\/li\u003e\n\u003cli\u003eShipbuilding and boat manufacturing\u003c\/li\u003e\n\u003cli\u003eCoastal and harbour infrastructure\u003c\/li\u003e\n\u003cli\u003eChemical and petrochemical processing pipelines\u003c\/li\u003e\n\u003cli\u003ePharmaceutical and food processing (CIP systems)\u003c\/li\u003e\n\u003cli\u003eHydraulic manifold and cylinder port closures (BSPT-threaded)\u003c\/li\u003e\n\u003cli\u003eDesalination plants and water treatment facilities\u003c\/li\u003e\n\u003cli\u003eSwimming pool and spa equipment\u003c\/li\u003e\n\u003cli\u003eMachine tool coolant systems with aggressive coolants\u003c\/li\u003e\n\u003cli\u003eOEM production line fastener supply\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eStandards \u0026amp; Compliance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIN 906\u003c\/strong\u003e - Tapered Hexagon Socket Screw Plugs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO 7-1\u003c\/strong\u003e - Pipe threads where pressure-tight joints are made on the threads (BSPT \/ R thread)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBS 21\u003c\/strong\u003e - British Standard for taper pipe threads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO 3506-1\u003c\/strong\u003e - Mechanical properties of corrosion-resistant stainless steel fasteners\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eASTM A967 \/ ISO 16048\u003c\/strong\u003e - Passivation of stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoHS \/ REACH\u003c\/strong\u003e - Compliant\u003c\/li\u003e\n\u003cli\u003eMill Test Certificates (EN 10204 3.1) available on request\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eOrdering \u0026amp; Packaging\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eStandard bulk packaging: per 100 pcs or per 1000 pcs\u003c\/li\u003e\n\u003cli\u003eCustom quantities for OEM and production orders\u003c\/li\u003e\n\u003cli\u003eLabelled with thread size (R), material grade (A4-70), surface treatment, and DIN 906\u003c\/li\u003e\n\u003cli\u003eMost sizes available from stock - fast dispatch\u003c\/li\u003e\n\u003cli\u003eMTC \/ EN 10204 3.1 certificates available on request\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ: What makes A4 better than A2 for marine applications?\u003c\/strong\u003e\u003cbr\u003eA: A4 (SUS316) contains 2-3% molybdenum which dramatically improves resistance to chloride pitting and crevice corrosion - the primary failure mode in saltwater environments. A2 (SUS304) lacks molybdenum and is not recommended for prolonged saltwater exposure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is BSPT thread and how does it differ from BSPP?\u003c\/strong\u003e\u003cbr\u003eA: BSPT (R thread per ISO 7-1) is a tapered thread that seals by thread interference - no washer needed. BSPP (G thread per ISO 228-1) is parallel and requires a face seal washer. They use the same 55 degree Whitworth thread form but are not interchangeable.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does a BSPT plug need PTFE tape or thread sealant?\u003c\/strong\u003e\u003cbr\u003eA: For low-pressure applications, the taper interference alone is often sufficient. For higher pressure or critical sealing, PTFE tape or anaerobic thread sealant is recommended as additional insurance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What Allen key size do I need?\u003c\/strong\u003e\u003cbr\u003eA: The internal hex socket size (S\/AF) varies by thread size - see the dimensions table above. For example, R 1\/2 uses an 8mm hex key, R 1 uses a 12mm hex key.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Are Mill Test Certificates available?\u003c\/strong\u003e\u003cbr\u003eA: Yes. FULLERKREG provides EN 10204 3.1 material certificates for all A4 stainless steel fasteners upon request.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is A4 stainless suitable for high-temperature applications?\u003c\/strong\u003e\u003cbr\u003eA: A4 (SUS316) performs well up to approximately 870 degrees C in intermittent service. For sustained high-temperature applications above 300 degrees C, please consult our technical team.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cem\u003eAll FULLERKREG DIN 906 BSPT marine stainless steel socket pipe plugs are manufactured to DIN and ISO standards. Contact FULLERKREG for bulk pricing, OEM supply, or technical support.\u003c\/em\u003e\u003c\/p\u003e","products":[],"url":"https:\/\/www.fullerkr.com\/collections\/imperial-bspt-socket-pipe-plugs-din-906-marine-stainless-steel-a4.oembed","provider":"Fullerkreg Fasteners","version":"1.0","type":"link"}