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PartsTable / COMPONENT / BR-6951-0440-0.125-35
BR-6951-0440-0.125-35 ✓ 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 BR-6951-0440-0.125-35 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 5310-01-304-9459, 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
BR-6951-0440-0.125-35
NSN: 5310-01-304-9459
FSC: 5310
CAGE: 05791 — LYN-TRON, INC. DBA LYN-TRON INC (USA)
SPECIFICATIONS
Part NumberBR-6951-0440-0.125-35
NSN5310-01-304-9459
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: BR-6951-0440-0.125-35 · 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 DIRECTION: RIGHT-HAND
•
NUT STYLE: HEXAGON
•
THREAD QUANTITY PER INCH: 40
•
NOMINAL THREAD SIZE: 0.112 INCHES IN
•
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
WIDTH ACROSS FLATS: 0.250 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM-B633, TYPE 1 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
NUT STYLEHEXAGON
THREAD QUANTITY PER INCH40
NOMINAL THREAD SIZE0.112 INCHES IN
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
WIDTH ACROSS FLATS0.250 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM-B633, TYPE 1 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-626, 1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTZINC OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
18X15X11SWDOM275Interchangeable
interchangeable cross-reference
interchangeable
ASTM-D4727Interchangeable
interchangeable cross-reference
interchangeable
8823Interchangeable
interchangeable cross-reference
interchangeable
ASTM-D5118Interchangeable
interchangeable cross-reference
interchangeable
PPP-B-636Interchangeable
interchangeable cross-reference
interchangeable
ASTM-D1974Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BR-6951-0440-0.125-35?
BR-6951-0440-0.125-35 is a BR-6951-0440-0.125-35.
What parts can replace BR-6951-0440-0.125-35?
There are 17 known substitutes for BR-6951-0440-0.125-35: 18X15X11SWDOM275, ASTM-D4727, 8823 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BR-6951-0440-0.125-35?
BR-6951-0440-0.125-35 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-304-9459. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026