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762-21 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

762-21: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 416 OVERALL, recess_angle: 89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM, hole_diameter: 0.251 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN, recess_diameter: 0.282 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN, outside_diameter: 0.380 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN, style_designator: RECESSED. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-166-5403, 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
762-21
NSN: 5310-00-166-5403
FSC: 5310 — Nuts and Washers
CAGE: 99167 — HAMILTON SUNDSTRAND CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP 416 OVERALL
recess_angle89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM
hole_diameter0.251 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN
recess_diameter0.282 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN
outside_diameter0.380 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
style_designatorRECESSED
material_thickness0.080 INCHES NOMINAL IN
material_document_and_classificationASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-166-5403
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 762-21 · 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
•
STYLE DESIGNATOR: RECESSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.380 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.080 INCHES NOMINAL IN
•
RECESS DIAMETER: 0.282 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 416 OVERALL
•
HOLE DIAMETER: 0.251 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN
•
RECESS ANGLE: 89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORRECESSED
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.380 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
MATERIAL THICKNESS0.080 INCHES NOMINAL IN
RECESS DIAMETER0.282 INCHES MINIMUM AND 0.285 INCHES MAXIMUM IN
MATERIALSTEEL COMP 416 OVERALL
HOLE DIAMETER0.251 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN
RECESS ANGLE89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 762-21?
762-21 is a WASHER,RECESSED.
What is the NSN for 762-21?
762-21 is cataloged in the U.S. Government catalog under NSN 5310-00-166-5403. 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.