PartsTable
Technical Data Sheet
Download PDF

50131-1 — SEAT,VALVE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

50131-1: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-044-6570, 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
50131-1
NSN: 5310-01-044-6570
NIINs: 010446570, 011898622
FSC: 5310 — Nuts and Washers
CAGE: 82340 — L3HARRIS TECHNOLOGIES, INC. DIV SPACE AND AIRBORNE SYSTEMS (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
NSN5310-01-044-6570
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 50131-1 · 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
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.138 INCHES IN
•
NUT DIAMETER: 0.266 INCHES MINIMUM AND 0.296 INCHES MAXIMUM IN
•
PILOT DIAMETER: 0.182 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN
•
PILOT LENGTH: 0.049 INCHES MINIMUM AND 0.054 INCHES MAXIMUM IN
•
NUT HEIGHT: 0.096 INCHES MINIMUM AND 0.131 INCHES MAXIMUM IN
•
NUT STYLE: CLINCH
TECHNICAL CHARACTERISTICS
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.138 INCHES IN
NUT DIAMETER0.266 INCHES MINIMUM AND 0.296 INCHES MAXIMUM IN
PILOT DIAMETER0.182 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN
PILOT LENGTH0.049 INCHES MINIMUM AND 0.054 INCHES MAXIMUM IN
NUT HEIGHT0.096 INCHES MINIMUM AND 0.131 INCHES MAXIMUM IN
NUT STYLECLINCH
THREAD CLASS2B
THREAD QUANTITY PER INCH32
SUBSTITUTES & CROSS-REFERENCES 8
PEMCLS632-2Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
10001-8Reference document
Same NSN cross-reference
Reference document — Secondary reference
322621-27Reference document
Same NSN cross-reference
Reference document — Secondary reference
CLS6-32-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
625917Reference document
Same NSN cross-reference
Reference document — Secondary reference
50SWX-632-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
Ready to buy 50131-1?
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 50131-1?
50131-1 is a SEAT,VALVE.
What parts can replace 50131-1?
There are 8 known substitutes for 50131-1: PEMCLS632-2, 10001-8, 322621-27 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 50131-1?
50131-1 is cataloged in the U.S. Government catalog under NSN 5310-01-044-6570. 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 — 50131-1

✓ 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.