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MS35691E Hexagon Jam Nut

MS35691E Hexagon Jam Nut

MS35691E Hexagon Jam Nuts are thin, low-profile hexagonal jam nuts manufactured to U.S. Military Standard MS35691, Revision E. Available in five material and finish classes covering #4-40 UNC through 1"-14 UNF. All FULLERKREG MS35691E nuts are produced and inspected in strict conformance with the military specification, ensuring full interchangeability with AN315, AN364, and NAS1021 hardware.

Product Series Overview

MS35691-1 to -28 — Carbon Steel, Plain (Uncoated)
Material: Carbon Steel · Finish: Plain / Uncoated · Thread: UNC & UNF · Size: #4-40 to 1"-14

MS35691-29 to -56 — Carbon Steel, Cadmium Plated
Material: Carbon Steel · Finish: Cadmium Plated (QQ-P-416 Type II Cl.2) · Thread: UNC & UNF · Size: #4-40 to 1"-14

MS35691-57 to -84 — Carbon Steel, Zinc Plated
Material: Carbon Steel · Finish: Zinc Plated (QQ-Z-325 Type II) · Thread: UNC & UNF · Size: #4-40 to 1"-14

MS35691-85 to -112 — Stainless Steel CRES, Plain / Passivated
Material: CRES 303/304 · Finish: Plain / Passivated · Thread: UNC & UNF · Size: #4-40 to 1"-14

MS35691-113 to -140 — Stainless Steel CRES, Passivated (AMS 2700)
Material: CRES 303/304 · Finish: Passivated per AMS 2700 · Thread: UNC & UNF · Size: #4-40 to 1"-14

Selection Guide

Feature Plain C.S. Cad. Plated Zinc Plated CRES Plain CRES AMS2700
Dash Range -1 to -28 -29 to -56 -57 to -84 -85 to -112 -113 to -140
Material Low Carbon Steel CRES 303/304
Finish Plain QQ-P-416 Cd QQ-Z-325 Zn Passivated AMS 2700
Corrosion Low High Medium High Very High
Application General Aerospace Outdoor Chemical/Food Aerospace HP
Thread Class 2B per ASME B1.1
Size Range #4-40 UNC through 1"-14 UNF
Supersedes AN315 AN364 — — —

Dimensional Data — All Series (Consolidated)

All dimensions in inches. Odd dash = UNC, Even dash = UNF. Series 1-3: Carbon Steel. Series 4-5: CRES 303/304 (unit weight approx. 8% higher). Tolerances per MS35691 / ASME B18.2.2.

Size TPI Thread S1 Part No. (Plain) S2 Part No. (Cad.) S3 Part No. (Zn) S4 Part No. (CRES) S5 Part No. (AMS2700) F Max F Min G Min H Max H Min
#4 40 UNC -1 -29 -57 -85 -113 0.250 0.241 0.217 0.098 0.083
#4 48 UNF -2 -30 -58 -86 -114 0.250 0.241 0.217 0.098 0.083
#6 32 UNC -3 -31 -59 -87 -115 0.312 0.302 0.273 0.114 0.098
#6 40 UNF -4 -32 -60 -88 -116 0.312 0.302 0.273 0.114 0.098
#8 32 UNC -5 -33 -61 -89 -117 0.344 0.332 0.299 0.130 0.114
#8 36 UNF -6 -34 -62 -90 -118 0.344 0.332 0.299 0.130 0.114
#10 24 UNC -7 -35 -63 -91 -119 0.375 0.362 0.326 0.130 0.114
#10 32 UNF -8 -36 -64 -92 -120 0.375 0.362 0.326 0.130 0.114
1/4" 20 UNC -9 -37 -65 -93 -121 0.438 0.425 0.383 0.163 0.146
1/4" 28 UNF -10 -38 -66 -94 -122 0.438 0.425 0.383 0.163 0.146
5/16" 18 UNC -11 -39 -67 -95 -123 0.500 0.484 0.436 0.195 0.178
5/16" 24 UNF -12 -40 -68 -96 -124 0.500 0.484 0.436 0.195 0.178
3/8" 16 UNC -13 -41 -69 -97 -125 0.562 0.545 0.489 0.227 0.209
3/8" 24 UNF -14 -42 -70 -98 -126 0.562 0.545 0.489 0.227 0.209
7/16" 14 UNC -15 -43 -71 -99 -127 0.688 0.669 0.601 0.260 0.240
7/16" 20 UNF -16 -44 -72 -100 -128 0.688 0.669 0.601 0.260 0.240
1/2" 13 UNC -17 -45 -73 -101 -129 0.750 0.728 0.655 0.260 0.240
1/2" 20 UNF -18 -46 -74 -102 -130 0.750 0.728 0.655 0.260 0.240
9/16" 12 UNC -19 -47 -75 -103 -131 0.875 0.850 0.763 0.323 0.302
9/16" 18 UNF -20 -48 -76 -104 -132 0.875 0.850 0.763 0.323 0.302
5/8" 11 UNC -21 -49 -77 -105 -133 1.000 0.973 0.874 0.323 0.302
5/8" 18 UNF -22 -50 -78 -106 -134 1.000 0.973 0.874 0.323 0.302
3/4" 10 UNC -23 -51 -79 -107 -135 1.125 1.088 0.978 0.384 0.363
3/4" 16 UNF -24 -52 -80 -108 -136 1.125 1.088 0.978 0.384 0.363
7/8" 9 UNC -25 -53 -81 -109 -137 1.312 1.269 1.140 0.446 0.423
7/8" 14 UNF -26 -54 -82 -110 -138 1.312 1.269 1.140 0.446 0.423
1" 8 UNC -27 -55 -83 -111 -139 1.500 1.450 1.302 0.510 0.485
1" 14 UNF -28 -56 -84 -112 -140 1.500 1.450 1.302 0.510 0.485

Full part number = MS35691 + dash number shown above. Example: MS35691-9 (1/4"-20 UNC, plain carbon steel).

Standard Specification

  • Thread Class: 2B per ASME B1.1
  • Nut Height: Approx. 40-55% of standard hex nut height
  • Wrench Flats: Per ASME B18.2.2
  • Cadmium Plate: QQ-P-416, Type II, Class 2 (dash -29 to -56)
  • Zinc Plate: QQ-Z-325, Type II (dash -57 to -84)
  • Passivation: AMS 2700 (dash -113 to -140)
  • Certification: MTR and COC available on request
  • Supersedes: AN315 (plain), AN364 (cadmium-plated)

Product Display

       

Frequently Asked Questions

What are the five material/finish classes of MS35691E?
Plain carbon steel (-1~-28), cadmium-plated carbon steel (-29~-56), zinc-plated carbon steel (-57~-84), CRES plain/passivated (-85~-112), and CRES passivated per AMS 2700 (-113~-140). All five series share identical dimensions.

Which finish for aerospace?
Cadmium-plated (dash -29 to -56) is the traditional MIL-SPEC choice. For cadmium-restricted applications, use AMS 2700 passivated CRES (dash -113 to -140).

Are MS35691E nuts interchangeable with AN315 and AN364?
Yes. MS35691 supersedes AN315 (plain) and AN364 (cadmium-plated) and is fully dimensionally interchangeable.

Can I get material certifications?
Yes. FULLERKREG provides MTRs and COCs for all lots upon request.

Why FULLERKREG

  • 🏭 Direct Manufacturer — Full process control from raw material to finished part
  • 📐 Precision Compliance — Every lot inspected to MS35691 Rev. E requirements
  • 🔩 All 5 Material Classes — 140 part numbers, stocked for immediate dispatch
  • 📦 Flexible MOQ — Wholesale bulk packaging; custom kitting on request
  • 📋 Documentation Ready — MTRs, COCs, inspection reports for aerospace & defense
  • 🌍 Global Export — Export compliance and international logistics
  • ⚙️ Engineering Support — Application guidance and substitution analysis
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