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Technical Data Sheet
PartsTable / COMPONENT / 4-40X3/8IN. NYLON
4-40X3/8IN. NYLON ✓ 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 4-40X3/8IN. NYLON is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-827-9139, 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
4-40X3/8IN. NYLON
NSN: 5310-00-827-9139
FSC: 5310
CAGE: 83330 — DIALIGHT CORPORATION (USA)
SPECIFICATIONS
Part Number4-40X3/8IN. NYLON
NSN5310-00-827-9139
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4-40X3/8IN. NYLON · 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: PLASTIC POLYAMIDE NYLON OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NUT STYLE: HEXAGON
•
NUT HEIGHT: 0.087 INCHES MINIMUM AND 0.098 INCHES MAXIMUM IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
BEARING SURFACE TYPE: CHAMFERED OR FLAT
•
NOMINAL THREAD SIZE: 0.112 INCHES IN
•
THREAD QUANTITY PER INCH: 40
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALPLASTIC POLYAMIDE NYLON OVERALL
THREAD DIRECTIONRIGHT-HAND
NUT STYLEHEXAGON
NUT HEIGHT0.087 INCHES MINIMUM AND 0.098 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
BEARING SURFACE TYPECHAMFERED OR FLAT
NOMINAL THREAD SIZE0.112 INCHES IN
THREAD QUANTITY PER INCH40
MATERIAL DOCUMENT AND CLASSIFICATIONASTM D4066 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD CLASS2B
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
MILB933TYPEBInterchangeable
interchangeable cross-reference
interchangeable
34141SInterchangeable
interchangeable cross-reference
interchangeable
1031-01Interchangeable
interchangeable cross-reference
interchangeable
0-41L35Interchangeable
interchangeable cross-reference
interchangeable
462481Interchangeable
interchangeable cross-reference
interchangeable
10310-01Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4-40X3/8IN. NYLON?
4-40X3/8IN. NYLON is a 4-40X3/8IN. NYLON.
What parts can replace 4-40X3/8IN. NYLON?
There are 19 known substitutes for 4-40X3/8IN. NYLON: MILB933TYPEB, 34141S, 1031-01 and 16 more. Substitute compatibility should be verified for your specific system.
Is 4-40X3/8IN. NYLON still available?
4-40X3/8IN. NYLON 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