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PartsTable / COMPONENT / B4/A4/DIN127
B4/A4/DIN127 ✓ 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 B4/A4/DIN127 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 5310-01-394-4473, 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
B4/A4/DIN127
NSN: 5310-01-394-4473
FSC: 5310
CAGE: C1591 — TIGGES GMBH UND CO.KG (DEU)
SPECIFICATIONS
Part NumberB4/A4/DIN127
NSN5310-01-394-4473
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: B4/A4/DIN127 · 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
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
MATERIAL: STEEL COMP 316 OVERALL
•
OUTSIDE DIAMETER: 7.6 MILLIMETERS NOMINAL MM
•
MATERIAL THICKNESS: 0.9 MILLIMETERS NOMINAL MM
•
HOLE DIAMETER: 4.1 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
MATERIALSTEEL COMP 316 OVERALL
OUTSIDE DIAMETER7.6 MILLIMETERS NOMINAL MM
MATERIAL THICKNESS0.9 MILLIMETERS NOMINAL MM
HOLE DIAMETER4.1 MILLIMETERS NOMINAL MM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
4337Interchangeable
interchangeable cross-reference
interchangeable
4337AInterchangeable
interchangeable cross-reference
interchangeable
6107385Interchangeable
interchangeable cross-reference
interchangeable
V1083Interchangeable
interchangeable cross-reference
interchangeable
92031Interchangeable
interchangeable cross-reference
interchangeable
92031EInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B4/A4/DIN127?
B4/A4/DIN127 is a B4/A4/DIN127.
What parts can replace B4/A4/DIN127?
There are 11 known substitutes for B4/A4/DIN127: 4337, 4337A, 6107385 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B4/A4/DIN127?
B4/A4/DIN127 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-394-4473. 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