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PartsTable / COMPONENT / 7971980
7971980 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The X-WASHER is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: STEEL SAE 1010,CADMIUM OR ZINC PLATED,0.593 IN. O/A W,0.190 IN.

ID,0.749 IN. O/A H,0.065 IN. THK IN.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-740-4624, 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
7971980
NSN: 5310-00-740-4624
FSC: 5310
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
general_characteristics_item_descriptionSTEEL SAE 1010,CADMIUM OR ZINC PLATED,0.593 IN. O/A W,0.190 IN. ID,0.749 IN. O/A H,0.065 IN. THK IN
NSN5310-00-740-4624
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 7971980 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL SAE 1010,CADMIUM OR ZINC PLATED,0.593 IN. O/A W,0.190 IN. ID,0.749 IN. O/A H,0.065 IN. THK IN
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL SAE 1010,CADMIUM OR ZINC PLATED,0.593 IN. O/A W,0.190 IN. ID,0.749 IN. O/A H,0.065 IN. THK IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
900012Interchangeable
interchangeable cross-reference
interchangeable
9000-1-1Interchangeable
interchangeable cross-reference
interchangeable
HC1098-1Interchangeable
interchangeable cross-reference
interchangeable
U7B961551MInterchangeable
interchangeable cross-reference
interchangeable
156313-01Interchangeable
interchangeable cross-reference
interchangeable
970138-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 7971980?
7971980 is a X-WASHER.
What parts can replace 7971980?
There are 10 known substitutes for 7971980: 900012, 9000-1-1, HC1098-1 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 7971980?
7971980 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-740-4624. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026