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PartsTable / COMPONENT / 156401
156401 ✓ 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 PLUG,PIPE is a the manufacturer industrial component. Key specifications include material: TUNGSTEN ALLOY, end_item_identification: VALVE, PRESS, material_document_and_classification: ASTM B348 ASSN STD SINGLE MATERIAL RESPONSE, part_name_assigned_by_controlling_agency: GUIDE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-171-4350, 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
156401
NSN: 5315-00-171-4350
FSC: 5315
CAGE: 92555 — THE LEE CO DBA THE LEE CO (USA)
SPECIFICATIONS
materialTUNGSTEN ALLOY
end_item_identificationVALVE, PRESS
material_document_and_classificationASTM B348 ASSN STD SINGLE MATERIAL RESPONSE
part_name_assigned_by_controlling_agencyGUIDE
NSN5315-00-171-4350
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 156401 · 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
•
PIN OVERALL LENGTH: 0.073 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN
•
FIRST END LOCATION: TAPERED END
TECHNICAL CHARACTERISTICS (FLIS)
PIN OVERALL LENGTH0.073 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN
FIRST END LOCATIONTAPERED END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
047-140-255-101Interchangeable
interchangeable cross-reference
interchangeable
J108Interchangeable
interchangeable cross-reference
interchangeable
47-140-244-1Interchangeable
interchangeable cross-reference
interchangeable
559A-1M-40Interchangeable
interchangeable cross-reference
interchangeable
2271439PC2Interchangeable
interchangeable cross-reference
interchangeable
1093438Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 156401?
156401 is a PLUG,PIPE.
What parts can replace 156401?
There are 20 known substitutes for 156401: 047-140-255-101, J108, 47-140-244-1 and 17 more. Substitute compatibility should be verified for your specific system.
Is 156401 still available?
156401 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026