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SP.126E — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

SP.126E: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include end_item_identification: V22 SUPPORT E, part_name_assigned_by_controlling_agency: WASHER. 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
SP.126E
NSN: 5310-00-471-6450
NIINs: 004716450, 016584256
FSC: 5310 — Nuts and Washers
CAGE: K7766 — BSI STANDARDS LIMITED (GBR)
SPECIFICATIONS
end_item_identificationV22 SUPPORT E
part_name_assigned_by_controlling_agencyWASHER
NSN5310-00-471-6450
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SP.126E · 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
99-9128796Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SP.126E?
SP.126E is a WASHER,FLAT.
What parts can replace SP.126E?
There is 1 known substitute for SP.126E: 99-9128796. Substitute compatibility should be verified for your specific system.
What is the NSN for SP.126E?
SP.126E 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.
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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.