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12631763 — Technical Data Sheet

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— · 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 KEY,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 3140 OVERALL, overall_height: 0.200 INCHES NOMINAL IN, overall_length: 1.438 INCHES NOMINAL IN, surface_treatment: COPPER OVERALL, starting_edge_shape: STRAIGHT, material_document_and_classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the Federal Logistics Information System under NSN 5315-00-721-5406, 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
12631763
NSN: 5315-00-721-5406
FSC: 5315
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 3140 OVERALL
overall_height0.200 INCHES NOMINAL IN
overall_length1.438 INCHES NOMINAL IN
surface_treatmentCOPPER OVERALL
starting_edge_shapeSTRAIGHT
material_document_and_classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
NSN5315-00-721-5406
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12631763 · 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
•
STARTING EDGE SHAPE: STRAIGHT
•
SURFACE TREATMENT: COPPER OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL COMP 3140 OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.200 INCHES NOMINAL IN
STARTING EDGE SHAPESTRAIGHT
OVERALL LENGTH1.438 INCHES NOMINAL IN
SURFACE TREATMENTCOPPER OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 3140 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
860850InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
6478641InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
1561509InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
5315007215406InterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
1582290InterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
1585600InterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12631763?
12631763 is a KEY,MACHINE.
What parts can replace 12631763?
There are 7 known substitutes for 12631763: 860850, 6478641, 1561509 and 4 more. Substitute compatibility should be verified for your specific system.
Is 12631763 still available?
12631763 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: September 2026