DIN 908 Hexagon Socket Screw Plugs

FULLERKREG supplies DIN 908 hexagon socket screw plugs across the full range of thread types, head configurations, materials, and surface treatments. DIN 908 plugs feature an internal hexagon (Allen key) drive with a flat sealing face — allowing installation in recessed or confined port locations where a standard hex head plug cannot be accessed. Available in metric fine (MF) thread and imperial BSPP (G thread) variants, in stainless steel and carbon steel grades. Select your thread type, head configuration, and material below:

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Metric Fine Thread (MF) — Flat Head, No Collar

Straight metric fine thread with flat sealing face — requires copper or aluminium sealing washer (DIN 7603). Flush head profile for maximum space efficiency.

Metric Flat Head Socket Pipe Plugs (DIN 908) — Stainless Steel A2 Material: A2 / SUS304  |  Grade: A2-70  |  Surface: Whitened & Passivated  |  Thread: Metric MF  |  Size: M10–M52

Metric Flat Head Socket Pipe Plugs (DIN 908) — Marine Stainless Steel A4 Material: A4 / SUS316  |  Grade: A4-70  |  Surface: Whitened & Passivated  |  Thread: Metric MF  |  Size: M10–M52

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Metric Fine Thread (MF) — With Collar

Straight metric fine thread with integrated collar (flange) — wider sealing face, positive stop, consistent seating depth. Superior vibration resistance from fine thread pitch.

Metric Socket Screw Plug with Collar MF (DIN 908) — Carbon Steel, Black Oxide Material: Carbon Steel 35K  |  Grade: 6.8  |  Surface: Black Oxide  |  Thread: Metric MF  |  Size: M10–M52

Metric Socket Screw Plug with Collar MF (DIN 908) — Carbon Steel, Zinc CR3 Material: Carbon Steel 35K  |  Grade: 6.8  |  Surface: Zinc CR3 (RoHS)  |  Thread: Metric MF  |  Size: M10–M52

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Imperial BSPP Thread (G Thread) — Flat Head, No Collar

British Standard Pipe Parallel (BSPP / G thread) with flat sealing face — requires bonded seal (Dowty washer) or O-ring face seal. Dominant pipe thread in European and Asian hydraulic & pneumatic systems.

Imperial BSPP Flat Head Socket Pipe Plugs (DIN 908) — Stainless Steel A2 Material: A2 / SUS304  |  Grade: A2-70  |  Surface: Whitened & Passivated  |  Thread: BSPP (G)  |  Size: G1/8–G2

Imperial BSPP Flat Head Socket Pipe Plugs (DIN 908) — Marine Stainless Steel A4 Material: A4 / SUS316  |  Grade: A4-70  |  Surface: Whitened & Passivated  |  Thread: BSPP (G)  |  Size: G1/8–G2

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Imperial BSPP Thread (G Thread) — With Collar

BSPP pipe thread with integrated collar — wider sealing face for bonded seal, positive stop for consistent seating depth. Ideal for hydraulic manifolds with G-thread ports.

Imperial BSPP Socket Screw Plug with Collar (DIN 908) — Carbon Steel, Black Oxide Material: Carbon Steel 35K  |  Grade: 6.8  |  Surface: Black Oxide  |  Thread: BSPP (G)  |  Size: G1/8–G2

Imperial BSPP Socket Screw Plug with Collar (DIN 908) — Carbon Steel, Zinc CR3 Material: Carbon Steel 35K  |  Grade: 6.8  |  Surface: Zinc CR3 (RoHS)  |  Thread: BSPP (G)  |  Size: G1/8–G2

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Product Gallery

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Quick Selection Guide

Thread Type	Head Style	Material	Best For
Metric MF	Flat (no collar)	A2 Stainless	Corrosive / outdoor / food-grade metric ports
Metric MF	Flat (no collar)	A4 Stainless	Marine / offshore / chemical metric ports
Metric MF	With Collar	Carbon Steel Black	Indoor hydraulic manifolds, oil-wetted, high-vibration
Metric MF	With Collar	Carbon Steel Zinc CR3	General industrial, automotive, outdoor metric ports
BSPP (G)	Flat (no collar)	A2 Stainless	Corrosive / food-grade BSPP ports
BSPP (G)	Flat (no collar)	A4 Stainless	Marine / offshore / chemical BSPP ports
BSPP (G)	With Collar	Carbon Steel Black	Indoor hydraulic manifolds with G-thread ports
BSPP (G)	With Collar	Carbon Steel Zinc CR3	General industrial / automotive BSPP ports

Can’t find the thread type, size, or material you need? Contact FULLERKREG — additional configurations available on request.