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Technical Data Sheet
PartsTable / COMPONENT / 1201N
1201N ✓ 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 POLYAMIDE NYLON OVERALL, hole_diameter: 0.116 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN, shoulder_height: 0.022 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN, outside_diameter: 0.245 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN, style_designator: SHOULDERED, shoulder_diameter: 0.175 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-164-7681, 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
1201N
NSN: 5310-00-164-7681
FSC: 5310
CAGE: 06540 — NEW HAVEN MFG CORP AMATOM ELECTRONIC HARDWARE DIV (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON OVERALL
hole_diameter0.116 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN
shoulder_height0.022 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN
outside_diameter0.245 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
style_designatorSHOULDERED
shoulder_diameter0.175 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN
material_thickness0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
material_document_and_classificationMIL-M-20693,COMP A,TY 1 MIL SPEC SINGLE MATERIAL RESPONSE OR L-P-410 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-164-7681
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1201N · 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 THICKNESS: 0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
•
SHOULDER DIAMETER: 0.175 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-M-20693,COMP A,TY 1 MIL SPEC SINGLE MATERIAL RESPONSE OR L-P-410 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
STYLE DESIGNATOR: SHOULDERED
•
SHOULDER HEIGHT: 0.022 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN
•
MATERIAL: PLASTIC POLYAMIDE NYLON OVERALL
•
OUTSIDE DIAMETER: 0.245 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.116 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL THICKNESS0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
SHOULDER DIAMETER0.175 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-M-20693,COMP A,TY 1 MIL SPEC SINGLE MATERIAL RESPONSE OR L-P-410 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
STYLE DESIGNATORSHOULDERED
SHOULDER HEIGHT0.022 INCHES MINIMUM AND 0.032 INCHES MAXIMUM IN
MATERIALPLASTIC POLYAMIDE NYLON OVERALL
OUTSIDE DIAMETER0.245 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
HOLE DIAMETER0.116 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
898-015Interchangeable
interchangeable cross-reference
interchangeable
4730-Z02-0043Interchangeable
interchangeable cross-reference
interchangeable
2630-18527N116Interchangeable
Same NIIN cross-reference
interchangeable
306-003-0401Interchangeable
Same NIIN cross-reference
interchangeable
801313Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1201N?
1201N is a WASHER,SHOULDERED.
What parts can replace 1201N?
There are 5 known substitutes for 1201N: 898-015, 4730-Z02-0043, 2630-18527N116 and 2 more. Substitute compatibility should be verified for your specific system.
Is 1201N still available?
1201N is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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Last verified: July 2026