PartsTable
Technical Data Sheet
Download PDF

777-3381-001 — WASHER,SPRING TENSION

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

777-3381-001: WASHER,SPRING TENSION.

The WASHER,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: BERYLLIUM OVERALL, hole_diameter: 0.193 INCHES MINIMUM AND 0.193 INCHES MINIMUM AND 0.213 INCHES MAXIMUM0.213 INCHES MAXIMUM IN, overall_height: 0.085 INCHES MINIMUM AND 0.085 INCHES MINIMUM AND 0.095 INCHES MAXIMUM0.095 INCHES MAXIMUM IN, outside_diameter: 0.490 INCHES MINIMUM AND 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM0.510 INCHES MAXIMUM IN, surface_treatment: CHROMATE OVERALL, material_thickness: 0.0064 INCHES MINIMUM AND 0.0064 INCHES MINIMUM AND 0.0076 INCHES MAXIMUM0.0076 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-078-3982, 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
777-3381-001
NSN: 5310-01-078-3982
FSC: 5310 — Nuts and Washers
CAGE: 13499 — ROCKWELL COLLINS, INC. DBA COLLINS AEROSPACE GOVERNMENT SYSTEMS DIV COLLINS AEROSPACE - GOVERNMENT SYSTEMS (USA)
SPECIFICATIONS
materialBERYLLIUM OVERALL
hole_diameter0.193 INCHES MINIMUM AND 0.193 INCHES MINIMUM AND 0.213 INCHES MAXIMUM0.213 INCHES MAXIMUM IN
overall_height0.085 INCHES MINIMUM AND 0.085 INCHES MINIMUM AND 0.095 INCHES MAXIMUM0.095 INCHES MAXIMUM IN
outside_diameter0.490 INCHES MINIMUM AND 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM0.510 INCHES MAXIMUM IN
surface_treatmentCHROMATE OVERALL
material_thickness0.0064 INCHES MINIMUM AND 0.0064 INCHES MINIMUM AND 0.0076 INCHES MAXIMUM0.0076 INCHES MAXIMUM IN
minimum_tensile_strength148000 POUNDS PER SQUARE INCH148000 POUNDS PER SQUARE INCH LBS
material_document_and_classificationQQ-C-533 TEMPER A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classification580-0034-00 FSCM 13499 MFR REF SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-078-3982
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 777-3381-001 · 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: 580-0034-00 FSCM 13499 MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-533 TEMPER A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.490 INCHES MINIMUM AND 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM0.510 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.0064 INCHES MINIMUM AND 0.0064 INCHES MINIMUM AND 0.0076 INCHES MAXIMUM0.0076 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CHROMATE OVERALL
•
MINIMUM TENSILE STRENGTH: 148000 POUNDS PER SQUARE INCH148000 POUNDS PER SQUARE INCH LBS
•
MATERIAL: BERYLLIUM OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.085 INCHES MINIMUM AND 0.085 INCHES MINIMUM AND 0.095 INCHES MAXIMUM0.095 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION580-0034-00 FSCM 13499 MFR REF SINGLE TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-533 TEMPER A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.490 INCHES MINIMUM AND 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM0.510 INCHES MAXIMUM IN
MATERIAL THICKNESS0.0064 INCHES MINIMUM AND 0.0064 INCHES MINIMUM AND 0.0076 INCHES MAXIMUM0.0076 INCHES MAXIMUM IN
SURFACE TREATMENTCHROMATE OVERALL
MINIMUM TENSILE STRENGTH148000 POUNDS PER SQUARE INCH148000 POUNDS PER SQUARE INCH LBS
MATERIALBERYLLIUM OVERALL
HOLE DIAMETER0.193 INCHES MINIMUM AND 0.193 INCHES MINIMUM AND 0.213 INCHES MAXIMUM0.213 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
Ready to buy 777-3381-001?
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 777-3381-001?
777-3381-001 is a WASHER,SPRING TENSION.
What is the NSN for 777-3381-001?
777-3381-001 is cataloged in the U.S. Government catalog under NSN 5310-01-078-3982. 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 — 777-3381-001

✓ 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.