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108A5 ✓ 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,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1010 OVERALL, thickness: 0.125 INCHES NOMINAL IN, hole_diameter: 0.531 INCHES NOMINAL IN, overall_diameter: 0.875 INCHES NOMINAL IN, features_provided: CASEHARDENED, peripheral_shape_style: ROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-274-7870, 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
108A5
NSN: 5310-00-274-7870
FSC: 5310
CAGE: 56442 — DIAMOND REO TRUCK CO (USA)
SPECIFICATIONS
materialSTEEL COMP 1010 OVERALL
thickness0.125 INCHES NOMINAL IN
hole_diameter0.531 INCHES NOMINAL IN
overall_diameter0.875 INCHES NOMINAL IN
features_providedCASEHARDENED
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-274-7870
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 108A5 · 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
•
CENTER HOLE SHAPE STYLE: ROUND
•
FEATURES PROVIDED: CASEHARDENED
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
THICKNESS: 0.125 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.531 INCHES NOMINAL IN
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OVERALL DIAMETER: 0.875 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CENTER HOLE SHAPE STYLEROUND
FEATURES PROVIDEDCASEHARDENED
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
THICKNESS0.125 INCHES NOMINAL IN
HOLE DIAMETER0.531 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLEROUND
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OVERALL DIAMETER0.875 INCHES NOMINAL IN
MATERIALSTEEL COMP 1010 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
B201Interchangeable
interchangeable cross-reference
interchangeable
PB201Interchangeable
interchangeable cross-reference
interchangeable
B7212-234-20-1Interchangeable
interchangeable cross-reference
interchangeable
STK 332Interchangeable
interchangeable cross-reference
interchangeable
922909 SIZE B BOX/SHIMSInterchangeable
interchangeable cross-reference
interchangeable
922905Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 108A5?
108A5 is a WASHER,FLAT.
What parts can replace 108A5?
There are 6 known substitutes for 108A5: B201, PB201, B7212-234-20-1 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 108A5?
108A5 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-274-7870. 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