PartsTable
Technical Data Sheet
Download PDF

553081 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

553081: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 1.201 INCHES NOMINAL IN, outside_diameter: 1.510 INCHES NOMINAL IN, style_designator: KEY, material_thickness: 0.051 INCHES NOMINAL IN, external_key_quantity: 13. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-151-8954, 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
553081
NSN: 5310-00-151-8954
FSC: 5310 — Nuts and Washers
CAGE: 1UVT5 — BRP US INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter1.201 INCHES NOMINAL IN
outside_diameter1.510 INCHES NOMINAL IN
style_designatorKEY
material_thickness0.051 INCHES NOMINAL IN
external_key_quantity13
external_prebent_key_width0.158 INCHES NOMINAL IN
internal_prebent_key_width0.158 INCHES NOMINAL IN
internal_prebent_key_length0.094 INCHES NOMINAL IN
overall_distance_including_keys1.895 INCHES NOMINAL IN
NSN5310-00-151-8954
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 553081 · 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
•
INTERNAL PREBENT KEY WIDTH: 0.158 INCHES NOMINAL IN
•
OVERALL DISTANCE INCLUDING KEYS: 1.895 INCHES NOMINAL IN
•
STYLE DESIGNATOR: KEY
•
OUTSIDE DIAMETER: 1.510 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.051 INCHES NOMINAL IN
•
EXTERNAL KEY QUANTITY: 13
•
INTERNAL PREBENT KEY LENGTH: 0.094 INCHES NOMINAL IN
•
EXTERNAL PREBENT KEY WIDTH: 0.158 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
INTERNAL PREBENT KEY WIDTH0.158 INCHES NOMINAL IN
OVERALL DISTANCE INCLUDING KEYS1.895 INCHES NOMINAL IN
STYLE DESIGNATORKEY
OUTSIDE DIAMETER1.510 INCHES NOMINAL IN
MATERIAL THICKNESS0.051 INCHES NOMINAL IN
EXTERNAL KEY QUANTITY13
INTERNAL PREBENT KEY LENGTH0.094 INCHES NOMINAL IN
EXTERNAL PREBENT KEY WIDTH0.158 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
HOLE DIAMETER1.201 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: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 553081?
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 553081?
553081 is a WASHER,KEY.
What is the NSN for 553081?
553081 is cataloged in the U.S. Government catalog under NSN 5310-00-151-8954. 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 — 553081

✓ 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.