PartsTable
Technical Data Sheet
Download PDF

99-9128796 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

99-9128796: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.017 INCHES MINIMUM AND 0.021 INCHES MAXIMUM IN, hole_diameter: 0.267 INCHES MINIMUM AND 0.277 INCHES MAXIMUM IN, hardness_rating: 21.0 ROCKWELL C MINIMUM AND 22.0 ROCKWELL C MAXIMUM, overall_diameter: 0.502 INCHES MINIMUM AND 0.522 INCHES MAXIMUM IN, special_features: PER THE UK, THIS IS NOT A DUPLICATE OF NSN 5310-99-680-0061.. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-471-6450, 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
99-9128796
NSN: 5310-00-471-6450
FSC: 5310 — Nuts and Washers
CAGE: 99995 — NATO STOCK NUMBER ASSIGNED BY ANOTHER NATION
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.017 INCHES MINIMUM AND 0.021 INCHES MAXIMUM IN
hole_diameter0.267 INCHES MINIMUM AND 0.277 INCHES MAXIMUM IN
hardness_rating21.0 ROCKWELL C MINIMUM AND 22.0 ROCKWELL C MAXIMUM
overall_diameter0.502 INCHES MINIMUM AND 0.522 INCHES MAXIMUM IN
special_featuresPER THE UK, THIS IS NOT A DUPLICATE OF NSN 5310-99-680-0061.
surface_treatmentCADMIUM OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-471-6450
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 99-9128796 · 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: 0.502 INCHES MINIMUM AND 0.522 INCHES MAXIMUM IN
•
HARDNESS RATING: 21.0 ROCKWELL C MINIMUM AND 22.0 ROCKWELL C MAXIMUM
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
SURFACE TREATMENT: CADMIUM OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.502 INCHES MINIMUM AND 0.522 INCHES MAXIMUM IN
HARDNESS RATING21.0 ROCKWELL C MINIMUM AND 22.0 ROCKWELL C MAXIMUM
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SPECIAL FEATURESPER THE UK, THIS IS NOT A DUPLICATE OF NSN 5310-99-680-0061.
SURFACE TREATMENTCADMIUM OVERALL
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.267 INCHES MINIMUM AND 0.277 INCHES MAXIMUM IN
THICKNESS0.017 INCHES MINIMUM AND 0.021 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 1
SP.126EReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy 99-9128796?
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 99-9128796?
99-9128796 is a WASHER,FLAT.
What parts can replace 99-9128796?
There is 1 known substitute for 99-9128796: SP.126E. Substitute compatibility should be verified for your specific system.
What is the NSN for 99-9128796?
99-9128796 is cataloged in the U.S. Government catalog under NSN 5310-00-471-6450. 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 — 99-9128796

✓ 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.