PartsTable
Technical Data Sheet
Download PDF

A31-181 — NUT,PLAIN,BLIND RIVET

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

A31-181: NUT,PLAIN,BLIND RIVET.

The NUT,PLAIN,BLIND RIVET is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY OVERALL, nut_style: BLIND RIVET W/SMOOTH ROUND SHANK, head_style: FLAT COUNTERSUNK, nut_length: 0.740 INCHES NOMINAL IN, nut_diameter: 0.413 INCHES NOMINAL IN, thread_class: 3B. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-052-5686, 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
A31-181
NSN: 5310-00-052-5686
FSC: 5310 — Nuts and Washers
CAGE: 25472 — GOODRICH CORPORATION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY OVERALL
nut_styleBLIND RIVET W/SMOOTH ROUND SHANK
head_styleFLAT COUNTERSUNK
nut_length0.740 INCHES NOMINAL IN
nut_diameter0.413 INCHES NOMINAL IN
thread_class3B
head_diameter0.656 INCHES NOMINAL IN
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
surface_treatmentANODIZE OVERALL
nominal_thread_size0.312 INCHES IN
head_countersink_angle100.00 DEGREES NOMINAL
NSN5310-00-052-5686
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A31-181 · 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
•
NUT LENGTH: 0.740 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
HEAD COUNTERSINK ANGLE: 100.00 DEGREES NOMINAL
•
HEAD STYLE: FLAT COUNTERSUNK
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.312 INCHES IN
•
NUT DIAMETER: 0.413 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
NUT LENGTH0.740 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
HEAD COUNTERSINK ANGLE100.00 DEGREES NOMINAL
HEAD STYLEFLAT COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.312 INCHES IN
NUT DIAMETER0.413 INCHES NOMINAL IN
SURFACE TREATMENTANODIZE OVERALL
NUT STYLEBLIND RIVET W/SMOOTH ROUND SHANK
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
MS27130A139Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy A31-181?
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 A31-181?
A31-181 is a NUT,PLAIN,BLIND RIVET.
What parts can replace A31-181?
There is 1 known substitute for A31-181: MS27130A139. Substitute compatibility should be verified for your specific system.
What is the NSN for A31-181?
A31-181 is cataloged in the U.S. Government catalog under NSN 5310-00-052-5686. 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 — A31-181

✓ 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.