PartsTable
Technical Data Sheet
Download PDF

DIN125-B3-A4 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

DIN125-B3-A4: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 1.00 INCHES NOMINAL IN, hole_diameter: 5.3 INCHES NOMINAL IN, outside_diameter: 10.0 INCHES NOMINAL IN, overall_diameter: 10.0 INCHES NOMINAL IN, peripheral_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-699-3284, 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
DIN125-B3-A4
NSN: 5310-01-699-3284
FSC: 5310 — Nuts and Washers
CAGE: 07BS6 — GENERAL DYNAMICS LAND SYSTEMS, INC DBA GENERAL DYNAMICS LAND SYSTEMS CUSTOMER SERVICE & SU (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness1.00 INCHES NOMINAL IN
hole_diameter5.3 INCHES NOMINAL IN
outside_diameter10.0 INCHES NOMINAL IN
overall_diameter10.0 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identification5310-01-669-0331
cross-sectional_shape_styleRECTANGULAR
part_name_assigned_by_controlling_agencyWASHER, LOCK
NSN5310-01-699-3284
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: DIN125-B3-A4 · 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
•
OVERALL DIAMETER: 10.0 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OUTSIDE DIAMETER: 10.0 INCHES NOMINAL IN
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER10.0 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OUTSIDE DIAMETER10.0 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLEROUND
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER, LOCK
END ITEM IDENTIFICATION5310-01-669-0331
MATERIALSTEEL OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER5.3 INCHES NOMINAL IN
THICKNESS1.00 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 DIN125-B3-A4?
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 DIN125-B3-A4?
DIN125-B3-A4 is a WASHER,FLAT.
What is the NSN for DIN125-B3-A4?
DIN125-B3-A4 is cataloged in the U.S. Government catalog under NSN 5310-01-699-3284. 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 — DIN125-B3-A4

✓ 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.