PartsTable
Technical Data Sheet
PartsTable / COMPONENT / HP6131
HP6131 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include special_features: 5/16 INCH NCSS THIN WASHER USED ABOARD 25 FT RBS AND 26 FT TANB COAST GUARD VESSELS; SICR 1345 IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-560-9986, 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
HP6131
NSN: 5310-01-560-9986
FSC: 5310
CAGE: 78UL2 — SEASTAR SOLUTIONS INC (USA)
SPECIFICATIONS
special_features5/16 INCH NCSS THIN WASHER USED ABOARD 25 FT RBS AND 26 FT TANB COAST GUARD VESSELS; SICR 1345 IN
NSN5310-01-560-9986
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: HP6131 · 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
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURES5/16 INCH NCSS THIN WASHER USED ABOARD 25 FT RBS AND 26 FT TANB COAST GUARD VESSELS; SICR 1345 IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
113021Interchangeable
interchangeable cross-reference
interchangeable
FFS103TYPE1STYLE2Interchangeable
interchangeable cross-reference
interchangeable
MILG3036Interchangeable
interchangeable cross-reference
interchangeable
MS35489-135Interchangeable
interchangeable cross-reference
interchangeable
MS25489-135Interchangeable
interchangeable cross-reference
interchangeable
433184-5Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy HP6131?
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 HP6131?
HP6131 is a WASHER,FLAT.
What parts can replace HP6131?
There are 9 known substitutes for HP6131: 113021, FFS103TYPE1STYLE2, MILG3036 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for HP6131?
HP6131 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-560-9986. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — HP6131

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026