PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 1/4-20 UNC 2B TY 1
1/4-20 UNC 2B TY 1 ✓ 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 1/4-20 UNC 2B TY 1 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-386-0433, 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
1/4-20 UNC 2B TY 1
NSN: 5310-01-386-0433
FSC: 5310
CAGE: 80204 — AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED DBA AMERICAN NATIONAL STANDARDS INSTITUTE (USA)
SPECIFICATIONS
Part Number1/4-20 UNC 2B TY 1
NSN5310-01-386-0433
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1/4-20 UNC 2B TY 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
•
SURFACE TREATMENT: ZINC AND CHROMATE OVERALL
•
MATERIAL: STEEL OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
•
THREAD QUANTITY PER INCH: 20
•
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTZINC AND CHROMATE OVERALL
MATERIALSTEEL OVERALL
THREAD DIRECTIONRIGHT-HAND
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
NOMINAL THREAD SIZE0.250 INCHES IN
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
THREAD QUANTITY PER INCH20
THREAD CLASS2B
NONDEFINITIVE SPEC/STD DATA5 GRADE
WIDTH ACROSS FLATS0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
122-2422417 PC 200Interchangeable
interchangeable cross-reference
interchangeable
122-2298838 PC 200Interchangeable
interchangeable cross-reference
interchangeable
122-2422386 PIEInterchangeable
interchangeable cross-reference
interchangeable
122-2422395 PIECE 251Interchangeable
interchangeable cross-reference
interchangeable
18914-L-1Interchangeable
interchangeable cross-reference
interchangeable
701-2298824 PIECE 251Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 1/4-20 UNC 2B TY 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 1/4-20 UNC 2B TY 1?
1/4-20 UNC 2B TY 1 is a 1/4-20 UNC 2B TY 1.
What parts can replace 1/4-20 UNC 2B TY 1?
There are 26 known substitutes for 1/4-20 UNC 2B TY 1: 122-2422417 PC 200, 122-2298838 PC 200, 122-2422386 PIE and 23 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1/4-20 UNC 2B TY 1?
1/4-20 UNC 2B TY 1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-386-0433. 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 — 1/4-20 UNC 2B TY 1

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