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3975791 — NUT,PLAIN,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

3975791: NUT,PLAIN,HEXAGON.

The NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, nut_height: 0.665 INCHES NOMINAL IN, thread_class: MB, thread_series: UNIFIED NATIONAL COARSE (UNC), special_features: FINISH: D60, TYPE 1 PER FM100 MAGNI 575; MATERIAL GRADE 8. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-609-3945, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
3975791
NSN: 5310-01-609-3945
NIINs: 016093945, 016142302, 016317108, 016515378, 016515380, 016517144, 016574321, 016574322, 016588602, 016596347, 016632582, 016765265
FSC: 5310 — Nuts and Washers
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.665 INCHES NOMINAL IN
thread_classMB
thread_seriesUNIFIED NATIONAL COARSE (UNC)
special_featuresFINISH: D60, TYPE 1 PER FM100 MAGNI 575; MATERIAL GRADE 8
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
width_across_flats1.125 INCHES NOMINAL IN
nominal_thread_size0.750 INCHES IN
bearing_surface_typeCHAMFERED
end_item_identification2540-01-604-2617; MRAP - M-ATV
NSN5310-01-609-3945
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3975791 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
SUBSTITUTES & CROSS-REFERENCES 1
3975791001Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3975791?
3975791 is a NUT,PLAIN,HEXAGON.
What parts can replace 3975791?
There is 1 known substitute for 3975791: 3975791001. Substitute compatibility should be verified for your specific system.
What is the NSN for 3975791?
3975791 is cataloged in the U.S. Government catalog under NSN 5310-01-609-3945. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.