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91108A440 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

91108A440: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALL, hole_diameter: 0.384 INCHES NOMINAL IN, outside_diameter: 0.692 INCHES NOMINAL IN, style_designator: FLAT INTERNAL TEETH, material_thickness: 0.032 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN, internal_key_quantity: 10. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-642-5032, 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
91108A440
NSN: 5310-01-642-5032
FSC: 5310 — Nuts and Washers
CAGE: 2V507 — MCMASTER-CARR SUPPLY COMPANY (USA)
SPECIFICATIONS
materialSTEEL COMP 316 OVERALL
hole_diameter0.384 INCHES NOMINAL IN
outside_diameter0.692 INCHES NOMINAL IN
style_designatorFLAT INTERNAL TEETH
material_thickness0.032 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
internal_key_quantity10
end_item_identificationF-15SA ACFT
NSN5310-01-642-5032
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 91108A440 · 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
KEY FEATURES
•
STYLE DESIGNATOR: FLAT INTERNAL TEETH
•
OUTSIDE DIAMETER: 0.692 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.032 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 316 OVERALL
•
INTERNAL KEY QUANTITY: 10
•
HOLE DIAMETER: 0.384 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORFLAT INTERNAL TEETH
OUTSIDE DIAMETER0.692 INCHES NOMINAL IN
MATERIAL THICKNESS0.032 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
END ITEM IDENTIFICATIONF-15SA ACFT
MATERIALSTEEL COMP 316 OVERALL
INTERNAL KEY QUANTITY10
HOLE DIAMETER0.384 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 1
M1171-984171Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 91108A440?
91108A440 is a WASHER,LOCK.
What parts can replace 91108A440?
There is 1 known substitute for 91108A440: M1171-984171. Substitute compatibility should be verified for your specific system.
What is the NSN for 91108A440?
91108A440 is cataloged in the U.S. Government catalog under NSN 5310-01-642-5032. 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.