PartsTable
Technical Data Sheet
Download PDF

WEFC1321 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

WEFC1321: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1010 OVERALL, thickness: 0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN, hole_diameter: 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN, hardness_rating: 80.0 ROCKWELL B NOMINAL, overall_diameter: 1.869 INCHES MINIMUM AND 1.873 INCHES MAXIMUM IN, surface_treatment: COPPER OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-188-4176, 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
WEFC1321
NSN: 5310-00-188-4176
FSC: 5310 — Nuts and Washers
CAGE: 40152 — VME AMERICAS INC SUB OF VME GROUP N V (USA)
SPECIFICATIONS
materialSTEEL COMP 1010 OVERALL
thickness0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
hole_diameter0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN
hardness_rating80.0 ROCKWELL B NOMINAL
overall_diameter1.869 INCHES MINIMUM AND 1.873 INCHES MAXIMUM IN
surface_treatmentCOPPER OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationQQ-S-633-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-188-4176
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: WEFC1321 · 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
•
OVERALL DIAMETER: 1.869 INCHES MINIMUM AND 1.873 INCHES MAXIMUM IN
•
HARDNESS RATING: 80.0 ROCKWELL B NOMINAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
SURFACE TREATMENT: COPPER OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL COMP 1010 OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER1.869 INCHES MINIMUM AND 1.873 INCHES MAXIMUM IN
HARDNESS RATING80.0 ROCKWELL B NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SURFACE TREATMENTCOPPER OVERALL
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL COMP 1010 OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN
THICKNESS0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 8
XF22790Reference document
Same NSN cross-reference
Reference document — Secondary reference
52603HSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
10A8799Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
69406Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
636712Reference document
Same NSN cross-reference
Reference document — Secondary reference
6CFC1321Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
Ready to buy WEFC1321?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is WEFC1321?
WEFC1321 is a WASHER,FLAT.
What parts can replace WEFC1321?
There are 8 known substitutes for WEFC1321: XF22790, 52603H, 10A8799 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for WEFC1321?
WEFC1321 is cataloged in the U.S. Government catalog under NSN 5310-00-188-4176. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — WEFC1321

✓ 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.