PartsTable
Technical Data Sheet
Download PDF

277B-1-8-F-3 — WASHER,SHOULDERED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

277B-1-8-F-3: WASHER,SHOULDERED.

The WASHER,SHOULDERED is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON OVERALL, hole_diameter: 3.530 INCHES NOMINAL IN, shoulder_height: 0.750 INCHES NOMINAL IN, outside_diameter: 4.530 INCHES NOMINAL IN, style_designator: SHOULDERED, shoulder_diameter: 3.780 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-392-8413, 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
277B-1-8-F-3
NSN: 5310-01-392-8413
FSC: 5310 — Nuts and Washers
CAGE: 55242 — ISOMETRICS INC (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON OVERALL
hole_diameter3.530 INCHES NOMINAL IN
shoulder_height0.750 INCHES NOMINAL IN
outside_diameter4.530 INCHES NOMINAL IN
style_designatorSHOULDERED
shoulder_diameter3.780 INCHES NOMINAL IN
material_thickness0.125 INCHES NOMINAL IN
NSN5310-01-392-8413
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 277B-1-8-F-3 · 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
•
SHOULDER HEIGHT: 0.750 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SHOULDERED
•
OUTSIDE DIAMETER: 4.530 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.125 INCHES NOMINAL IN
•
SHOULDER DIAMETER: 3.780 INCHES NOMINAL IN
•
MATERIAL: PLASTIC POLYAMIDE NYLON OVERALL
•
HOLE DIAMETER: 3.530 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SHOULDER HEIGHT0.750 INCHES NOMINAL IN
STYLE DESIGNATORSHOULDERED
OUTSIDE DIAMETER4.530 INCHES NOMINAL IN
MATERIAL THICKNESS0.125 INCHES NOMINAL IN
SHOULDER DIAMETER3.780 INCHES NOMINAL IN
MATERIALPLASTIC POLYAMIDE NYLON OVERALL
HOLE DIAMETER3.530 INCHES NOMINAL 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
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy 277B-1-8-F-3?
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 277B-1-8-F-3?
277B-1-8-F-3 is a WASHER,SHOULDERED.
What is the NSN for 277B-1-8-F-3?
277B-1-8-F-3 is cataloged in the U.S. Government catalog under NSN 5310-01-392-8413. 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 — 277B-1-8-F-3

✓ 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.