PartsTable
Technical Data Sheet

25N125WFEY/DEL-MKS — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

25N125WFEY/DEL-MKS: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.050 INCHES MINIMUM AND 0.081 INCHES MAXIMUM IN, special_features: INNER DIAMETER-0.281 IN; OUTER DIAMETER-1.250 IN IN, end_item_identification: ARMORED MULTI-PURPOSE VEHICLE (AMPV), part_name_assigned_by_controlling_agency: WASHER,FENDER,1/4X1-1/4,ZY W/BLK DELTA. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-550-3505, 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
25N125WFEY/DEL-MKS
NSN: 5310-01-550-3505
FSC: 5310 — Nuts and Washers
CAGE: 4PE03 — OLD DOMINION FASTENERS, INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.050 INCHES MINIMUM AND 0.081 INCHES MAXIMUM IN
special_featuresINNER DIAMETER-0.281 IN; OUTER DIAMETER-1.250 IN IN
end_item_identificationARMORED MULTI-PURPOSE VEHICLE (AMPV)
part_name_assigned_by_controlling_agencyWASHER,FENDER,1/4X1-1/4,ZY W/BLK DELTA
NSN5310-01-550-3505
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 25N125WFEY/DEL-MKS · 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
•
COLOR: BLACK OVERALL
•
MATERIAL: STEEL OVERALL
•
THICKNESS: 0.050 INCHES MINIMUM AND 0.081 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
COLORBLACK OVERALL
SPECIAL FEATURESINNER DIAMETER-0.281 IN; OUTER DIAMETER-1.250 IN IN
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER,FENDER,1/4X1-1/4,ZY W/BLK DELTA
END ITEM IDENTIFICATIONARMORED MULTI-PURPOSE VEHICLE (AMPV)
MATERIALSTEEL OVERALL
THICKNESS0.050 INCHES MINIMUM AND 0.081 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 2
HRWBLKReference document
Same NSN cross-reference
Reference document — Secondary reference
25N125WFEY/DEY-MKSReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 25N125WFEY/DEL-MKS?
25N125WFEY/DEL-MKS is a WASHER,FLAT.
What parts can replace 25N125WFEY/DEL-MKS?
There are 2 known substitutes for 25N125WFEY/DEL-MKS: HRWBLK, 25N125WFEY/DEY-MKS. Substitute compatibility should be verified for your specific system.
What is the NSN for 25N125WFEY/DEL-MKS?
25N125WFEY/DEL-MKS is cataloged in the U.S. Government catalog under NSN 5310-01-550-3505. 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.