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8376831 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

8376831: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include hole_diameter: 0.320 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN, heat_treatment: QUENCHED AND TEMPERED, overall_height: 0.145 INCHES MINIMUM IN, outside_diameter: 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN, style_designator: DOME EXTERNAL AND INTERNAL TEETH, material_thickness: 0.063 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-574-7615, 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
8376831
NSN: 5310-00-574-7615
FSC: 5310 — Nuts and Washers
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
hole_diameter0.320 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN
heat_treatmentQUENCHED AND TEMPERED
overall_height0.145 INCHES MINIMUM IN
outside_diameter0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
style_designatorDOME EXTERNAL AND INTERNAL TEETH
material_thickness0.063 INCHES NOMINAL IN
material_document_and_classificationQQ-S-177 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-574-7615
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 8376831 · 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
•
HEAT TREATMENT: QUENCHED AND TEMPERED
•
STYLE DESIGNATOR: DOME EXTERNAL AND INTERNAL TEETH
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-177 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.063 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 1045 OR STEEL COMP 1045H OR STEEL COMP 1046 OR STEEL COMP 1049 OR STEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1552 OR STEEL COMP 1053 OR STEEL COMP 1054 OR STEEL COMP 1055 OR STEEL COMP 1059 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1062 OR STEEL COMP 1064 OR STEEL COMP 1065 OVERALL
•
HOLE DIAMETER: 0.320 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.145 INCHES MINIMUM IN
HEAT TREATMENTQUENCHED AND TEMPERED
STYLE DESIGNATORDOME EXTERNAL AND INTERNAL TEETH
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-177 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
MATERIAL THICKNESS0.063 INCHES NOMINAL IN
MATERIALSTEEL COMP 1045 OR STEEL COMP 1045H OR STEEL COMP 1046 OR STEEL COMP 1049 OR STEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1552 OR STEEL COMP 1053 OR STEEL COMP 1054 OR STEEL COMP 1055 OR STEEL COMP 1059 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1062 OR STEEL COMP 1064 OR STEEL COMP 1065 OVERALL
HOLE DIAMETER0.320 INCHES MINIMUM AND 0.332 INCHES MAXIMUM 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
5310005747615Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 8376831?
8376831 is a WASHER,LOCK.
What parts can replace 8376831?
There is 1 known substitute for 8376831: 5310005747615. Substitute compatibility should be verified for your specific system.
What is the NSN for 8376831?
8376831 is cataloged in the U.S. Government catalog under NSN 5310-00-574-7615. 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.