PartsTable
Technical Data Sheet
Download PDF

905520 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

905520: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include overall_diameter: 0.313 INCHES NOMINAL IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND, end_item_identification: SUPPORT BOX RETROFIT KIT, cross-sectional_shape_style: RECTANGULAR, part_name_assigned_by_controlling_agency: WASHER, FLAT, 0.313 (AP). This part is cataloged in the U.S.

Government catalog under NSN 5310-01-594-9577, 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
905520
NSN: 5310-01-594-9577
FSC: 5310 — Nuts and Washers
CAGE: A274N — SCANDINAVIAN MANUFACTURING SCAMA AB (SWE)
SPECIFICATIONS
overall_diameter0.313 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identificationSUPPORT BOX RETROFIT KIT
cross-sectional_shape_styleRECTANGULAR
part_name_assigned_by_controlling_agencyWASHER, FLAT, 0.313 (AP)
NSN5310-01-594-9577
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 905520 · 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: 0.313 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.313 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER, FLAT, 0.313 (AP)
END ITEM IDENTIFICATIONSUPPORT BOX RETROFIT KIT
CENTER HOLE SHAPE STYLEROUND
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
5310PL0843716Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy 905520?
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 905520?
905520 is a WASHER,FLAT.
What parts can replace 905520?
There is 1 known substitute for 905520: 5310PL0843716. Substitute compatibility should be verified for your specific system.
What is the NSN for 905520?
905520 is cataloged in the U.S. Government catalog under NSN 5310-01-594-9577. 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 — 905520

✓ 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.