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31570A-01 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

31570A-01: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, recess_depth: 1.5 MILLIMETERS NOMINAL MM, hole_diameter: 3.6 MILLIMETERS NOMINAL MM, overall_height: 2.5 MILLIMETERS NOMINAL MM, recess_diameter: 5.3 MILLIMETERS NOMINAL MM, outside_diameter: 7.0 MILLIMETERS NOMINAL MM. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-587-6994, 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
31570A-01
NSN: 5310-01-587-6994
FSC: 5310 — Nuts and Washers
CAGE: 0WEC9 — ELBITAMERICA, INC. (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
recess_depth1.5 MILLIMETERS NOMINAL MM
hole_diameter3.6 MILLIMETERS NOMINAL MM
overall_height2.5 MILLIMETERS NOMINAL MM
recess_diameter5.3 MILLIMETERS NOMINAL MM
outside_diameter7.0 MILLIMETERS NOMINAL MM
style_designatorRECESSED
end_item_identificationF-16 AIRCRAFT
NSN5310-01-587-6994
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 31570A-01 · 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: RECESSED
•
OUTSIDE DIAMETER: 7.0 MILLIMETERS NOMINAL MM
•
RECESS DEPTH: 1.5 MILLIMETERS NOMINAL MM
•
RECESS DIAMETER: 5.3 MILLIMETERS NOMINAL MM
•
MATERIAL: STEEL COMP 304 OVERALL
•
HOLE DIAMETER: 3.6 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT2.5 MILLIMETERS NOMINAL MM
STYLE DESIGNATORRECESSED
OUTSIDE DIAMETER7.0 MILLIMETERS NOMINAL MM
RECESS DEPTH1.5 MILLIMETERS NOMINAL MM
RECESS DIAMETER5.3 MILLIMETERS NOMINAL MM
END ITEM IDENTIFICATIONF-16 AIRCRAFT
MATERIALSTEEL COMP 304 OVERALL
HOLE DIAMETER3.6 MILLIMETERS NOMINAL MM
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: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 31570A-01?
31570A-01 is a WASHER,RECESSED.
What is the NSN for 31570A-01?
31570A-01 is cataloged in the U.S. Government catalog under NSN 5310-01-587-6994. 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.