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DIN137B8 ✓ 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,SPRING TENSION is a the manufacturer industrial component. Key specifications include color: BLACK OVERALL, material: STEEL OVERALL, hole_diameter: 8.4 MILLIMETERS NOMINAL MM, hardness_rating: 43.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM, outside_diameter: 15.0 MILLIMETERS NOMINAL MM, material_thickness: 0.8 MILLIMETERS NOMINAL MM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-239-1342, 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
DIN137B8
NSN: 5310-01-239-1342
FSC: 5310
CAGE: 15526 — METRIC AND MULTISTANDARD COMPONENTS CORP (USA)
SPECIFICATIONS
colorBLACK OVERALL
materialSTEEL OVERALL
hole_diameter8.4 MILLIMETERS NOMINAL MM
hardness_rating43.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
outside_diameter15.0 MILLIMETERS NOMINAL MM
material_thickness0.8 MILLIMETERS NOMINAL MM
NSN5310-01-239-1342
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: DIN137B8 · 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
•
OUTSIDE DIAMETER: 15.0 MILLIMETERS NOMINAL MM
•
MATERIAL: STEEL OVERALL
•
COLOR: BLACK OVERALL
•
HARDNESS RATING: 43.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
•
HOLE DIAMETER: 8.4 MILLIMETERS NOMINAL MM
•
MATERIAL THICKNESS: 0.8 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER15.0 MILLIMETERS NOMINAL MM
MATERIALSTEEL OVERALL
COLORBLACK OVERALL
HARDNESS RATING43.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
HOLE DIAMETER8.4 MILLIMETERS NOMINAL MM
MATERIAL THICKNESS0.8 MILLIMETERS NOMINAL MM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
DD445S4700-63ALT3PC140Interchangeable
interchangeable cross-reference
interchangeable
E2808PC140Interchangeable
interchangeable cross-reference
interchangeable
DD421S47-126ALT1PC42Interchangeable
interchangeable cross-reference
interchangeable
26264Interchangeable
interchangeable cross-reference
interchangeable
C124-5Interchangeable
interchangeable cross-reference
interchangeable
1250-0296Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is DIN137B8?
DIN137B8 is a WASHER,SPRING TENSION.
What parts can replace DIN137B8?
There are 16 known substitutes for DIN137B8: DD445S4700-63ALT3PC140, E2808PC140, DD421S47-126ALT1PC42 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for DIN137B8?
DIN137B8 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-239-1342. 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