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77730883 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

77730883: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.016 INCHES NOMINAL IN, hole_diameter: 0.164 INCHES NOMINAL IN, heat_treatment: COLD ROLLED, overall_diameter: 0.375 INCHES NOMINAL IN, special_features: REQUIRES ENVIRONMENTAL TESTIN ACCORDANCE W/SPECIAL PROJECTS FLEET BALLISTIC MISSILE PLAN OP 2747. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-770-8545, 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
77730883
NSN: 5310-00-770-8545
FSC: 5310 — Nuts and Washers
CAGE: K4342 — MB AEROSPACE LTD (GBR)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.016 INCHES NOMINAL IN
hole_diameter0.164 INCHES NOMINAL IN
heat_treatmentCOLD ROLLED
overall_diameter0.375 INCHES NOMINAL IN
special_featuresREQUIRES ENVIRONMENTAL TESTIN ACCORDANCE W/SPECIAL PROJECTS FLEET BALLISTIC MISSILE PLAN OP 2747
surface_treatmentCADMIUM OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
departure_from_cited_designatorAS MODIFIED BY SPECIAL FEATURES
material_document_and_classificationQQ-S-636-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-770-8545
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 77730883 · 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: 0.375 INCHES NOMINAL IN
•
HEAT TREATMENT: COLD ROLLED
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-636-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
DEPARTURE FROM CITED DESIGNATOR: AS MODIFIED BY SPECIAL FEATURES
•
SURFACE TREATMENT: CADMIUM OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.375 INCHES NOMINAL IN
HEAT TREATMENTCOLD ROLLED
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-636-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
DEPARTURE FROM CITED DESIGNATORAS MODIFIED BY SPECIAL FEATURES
SPECIAL FEATURESREQUIRES ENVIRONMENTAL TESTIN ACCORDANCE W/SPECIAL PROJECTS FLEET BALLISTIC MISSILE PLAN OP 2747
SURFACE TREATMENTCADMIUM OVERALL
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL OVERALL
CENTER HOLE SHAPE STYLEROUND
SUBSTITUTES & CROSS-REFERENCES 2
AN960-8LReference document
Same NSN cross-reference
Reference document — Identification reference
Y77730883Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 77730883?
77730883 is a WASHER,FLAT.
What parts can replace 77730883?
There are 2 known substitutes for 77730883: AN960-8L, Y77730883. Substitute compatibility should be verified for your specific system.
What is the NSN for 77730883?
77730883 is cataloged in the U.S. Government catalog under NSN 5310-00-770-8545. This indicates validated use in U.S. government and defense supply chains.
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