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PartsTable / COMPONENT / 10121977
10121977 ✓ 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,SHOULDERED is a the manufacturer industrial component. Key specifications include material: PLASTIC OVERALL, hole_diameter: 0.165 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN, shoulder_height: 0.049 INCHES NOMINAL IN, outside_diameter: 0.304 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN, style_designator: SHOULDERED, shoulder_diameter: 0.206 INCHES MINIMUM AND 0.216 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-022-8950, 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
10121977
NSN: 5310-01-022-8950
FSC: 5310
CAGE: A486G — NIMIKKEISTOKESKUS NCB FINLAND (FIN)
SPECIFICATIONS
materialPLASTIC OVERALL
hole_diameter0.165 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
shoulder_height0.049 INCHES NOMINAL IN
outside_diameter0.304 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
style_designatorSHOULDERED
shoulder_diameter0.206 INCHES MINIMUM AND 0.216 INCHES MAXIMUM IN
material_thickness0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
material_document_and_classificationL-P-509,TY 4,GR 10 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-022-8950
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10121977 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: L-P-509,TY 4,GR 10 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
STYLE DESIGNATOR: SHOULDERED
•
SHOULDER DIAMETER: 0.206 INCHES MINIMUM AND 0.216 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.165 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
•
SHOULDER HEIGHT: 0.049 INCHES NOMINAL IN
•
MATERIAL: PLASTIC OVERALL
•
OUTSIDE DIAMETER: 0.304 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONL-P-509,TY 4,GR 10 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
STYLE DESIGNATORSHOULDERED
SHOULDER DIAMETER0.206 INCHES MINIMUM AND 0.216 INCHES MAXIMUM IN
MATERIAL THICKNESS0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
HOLE DIAMETER0.165 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
SHOULDER HEIGHT0.049 INCHES NOMINAL IN
MATERIALPLASTIC OVERALL
OUTSIDE DIAMETER0.304 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
C54444Interchangeable
interchangeable cross-reference
interchangeable
B94.9 1/4-20 UNC HS G H1Interchangeable
interchangeable cross-reference
interchangeable
1701Interchangeable
interchangeable cross-reference
interchangeable
14011Interchangeable
interchangeable cross-reference
interchangeable
NC602Interchangeable
interchangeable cross-reference
interchangeable
14545-006Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 10121977?
10121977 is a WASHER,SHOULDERED.
What parts can replace 10121977?
There are 20 known substitutes for 10121977: C54444, B94.9 1/4-20 UNC HS G H1, 1701 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 10121977?
10121977 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-022-8950. 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