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767-3661-001 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

767-3661-001: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1010 OVERALL, hole_diameter: 0.546 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN, overall_width: 1.265 INCHES MINIMUM AND 1.297 INCHES MAXIMUM IN, special_features: COLOR IRIDESCENT YELLOW, surface_treatment: CADMIUM AND CHROMATE OVERALL, material_thickness: 0.1775 INCHES MINIMUM AND 0.1975 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-125-4361, 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
767-3661-001
NSN: 5310-01-125-4361
FSC: 5310 — Nuts and Washers
CAGE: 13499 — ROCKWELL COLLINS, INC. DBA COLLINS AEROSPACE GOVERNMENT SYSTEMS DIV COLLINS AEROSPACE - GOVERNMENT SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL COMP 1010 OVERALL
hole_diameter0.546 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN
overall_width1.265 INCHES MINIMUM AND 1.297 INCHES MAXIMUM IN
special_featuresCOLOR IRIDESCENT YELLOW
surface_treatmentCADMIUM AND CHROMATE OVERALL
material_thickness0.1775 INCHES MINIMUM AND 0.1975 INCHES MAXIMUM IN
external_straight_key_width0.484 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN
overall_distance_including_keys1.234 INCHES MINIMUM AND 1.266 INCHES MAXIMUM IN
material_document_and_classificationAISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-125-4361
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 767-3661-001 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
OVERALL DISTANCE INCLUDING KEYS: 1.234 INCHES MINIMUM AND 1.266 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL THICKNESS: 0.1775 INCHES MINIMUM AND 0.1975 INCHES MAXIMUM IN
•
EXTERNAL STRAIGHT KEY WIDTH: 0.484 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
OVERALL DISTANCE INCLUDING KEYS1.234 INCHES MINIMUM AND 1.266 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OVERALL WIDTH1.265 INCHES MINIMUM AND 1.297 INCHES MAXIMUM IN
MATERIAL THICKNESS0.1775 INCHES MINIMUM AND 0.1975 INCHES MAXIMUM IN
EXTERNAL STRAIGHT KEY WIDTH0.484 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN
SPECIAL FEATURESCOLOR IRIDESCENT YELLOW
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
MATERIALSTEEL COMP 1010 OVERALL
HOLE DIAMETER0.546 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN
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 767-3661-001?
767-3661-001 is a WASHER,KEY.
What is the NSN for 767-3661-001?
767-3661-001 is cataloged in the U.S. Government catalog under NSN 5310-01-125-4361. 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.