PartsTable
Technical Data Sheet
Download PDF

7539581 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

7539581: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1010 OVERALL, hole_diameter: 0.192 INCHES MINIMUM AND 0.196 INCHES MAXIMUM IN, outside_diameter: 0.350 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN, split_key_length: 0.101 INCHES MINIMUM AND 0.111 INCHES MAXIMUM IN, style_designator: KEY, surface_treatment: ZINC OR DICHROMATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-753-9581, 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
7539581
NSN: 5310-00-753-9581
FSC: 5310 — Nuts and Washers
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 1010 OVERALL
hole_diameter0.192 INCHES MINIMUM AND 0.196 INCHES MAXIMUM IN
outside_diameter0.350 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
split_key_length0.101 INCHES MINIMUM AND 0.111 INCHES MAXIMUM IN
style_designatorKEY
surface_treatmentZINC OR DICHROMATE OVERALL
material_thickness0.028 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
external_key_quantity3
external_prebent_key_angle30.0 DEGREES NOMINAL
external_prebent_key_width0.094 INCHES NOMINAL IN
angle_between_external_keys36.0 DEGREES NOMINAL
external_prebent_key_length0.085 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
NSN5310-00-753-9581
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 7539581 · 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
•
DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY: 0.208 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN
•
SPLIT KEY LENGTH: 0.101 INCHES MINIMUM AND 0.111 INCHES MAXIMUM IN
•
EXTERNAL PREBENT KEY LENGTH: 0.085 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
•
OVERALL DISTANCE INCLUDING KEYS: 0.520 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.350 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.028 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
DISTANCE FROM CENTERLINE TO INSIDE OF PREBENT KEY0.208 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN
SPLIT KEY LENGTH0.101 INCHES MINIMUM AND 0.111 INCHES MAXIMUM IN
EXTERNAL PREBENT KEY LENGTH0.085 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
OVERALL DISTANCE INCLUDING KEYS0.520 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.350 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
MATERIAL THICKNESS0.028 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
EXTERNAL KEY QUANTITY3
EXTERNAL PREBENT KEY ANGLE30.0 DEGREES NOMINAL
SUBSTITUTES & CROSS-REFERENCES 5
880G1Reference document
Same NSN cross-reference
Reference document — Secondary reference
4042810Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
860750Reference document
Same NSN cross-reference
Reference document — Secondary reference
1915009Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
637412Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy 7539581?
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 7539581?
7539581 is a WASHER,KEY.
What parts can replace 7539581?
There are 5 known substitutes for 7539581: 880G1, 4042810, 860750 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 7539581?
7539581 is cataloged in the U.S. Government catalog under NSN 5310-00-753-9581. 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 — 7539581

✓ 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.