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25087590 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

25087590: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include hole_diameter: 0.641 INCHES MINIMUM AND 0.663 INCHES MAXIMUM IN, outside_diameter: 1.045 INCHES MINIMUM AND 1.070 INCHES MAXIMUM IN, style_designator: FLAT EXTERNAL TEETH, material_thickness: 0.042 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN, part_name_assigned_by_controlling_agency: LOCK WASHER-EXTERNAL TOOTH. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-552-4308, 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
25087590
NSN: 5310-01-552-4308
FSC: 5310 — Nuts and Washers
CAGE: Z4117 — VOLVO GROUP GOVERNMENT SALES OCEANI OCEANIA VOLVO GROUP GOVERNMENT SALES (AUS)
SPECIFICATIONS
hole_diameter0.641 INCHES MINIMUM AND 0.663 INCHES MAXIMUM IN
outside_diameter1.045 INCHES MINIMUM AND 1.070 INCHES MAXIMUM IN
style_designatorFLAT EXTERNAL TEETH
material_thickness0.042 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
part_name_assigned_by_controlling_agencyLOCK WASHER-EXTERNAL TOOTH
NSN5310-01-552-4308
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 25087590 · 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
•
STYLE DESIGNATOR: FLAT EXTERNAL TEETH
•
OUTSIDE DIAMETER: 1.045 INCHES MINIMUM AND 1.070 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.042 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.641 INCHES MINIMUM AND 0.663 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORFLAT EXTERNAL TEETH
OUTSIDE DIAMETER1.045 INCHES MINIMUM AND 1.070 INCHES MAXIMUM IN
MATERIAL THICKNESS0.042 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
PART NAME ASSIGNED BY CONTROLLING AGENCYLOCK WASHER-EXTERNAL TOOTH
HOLE DIAMETER0.641 INCHES MINIMUM AND 0.663 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 1
35AX1016Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 25087590?
25087590 is a WASHER,LOCK.
What parts can replace 25087590?
There is 1 known substitute for 25087590: 35AX1016. Substitute compatibility should be verified for your specific system.
What is the NSN for 25087590?
25087590 is cataloged in the U.S. Government catalog under NSN 5310-01-552-4308. 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.