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PartsTable / COMPONENT / 13-158
13-158 ✓ 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 ELECTRONIC MODULE,STANDARDIZED is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, body_width: 4.250 INCHES MAXIMUM IN, nut_height: 0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN, body_height: 3.500 INCHES MAXIMUM IN, body_length: 5.250 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 5310-00-220-6683, 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
13-158
NSN: 5310-00-220-6683
FSC: 5310
CAGE: 95201 — NAPCO INTERNATIONAL LLC DBA NAPCO INTERNATIONAL INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
body_width4.250 INCHES MAXIMUM IN
nut_height0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN
body_height3.500 INCHES MAXIMUM IN
body_length5.250 INCHES MAXIMUM IN
thread_class3B
thread_seriesUNF
inclosure_typeFULLY INCLOSED
overall_length2.795 INCHES NOMINAL IN
drive_end_shapeSQUARE SINGLE END INTERNAL
mounting_methodTHREADED HOLE(S) SINGLE GROUP
NSN5310-00-220-6683
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 13-158 · 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
•
NUT STYLE: HEXAGON
•
NOMINAL THREAD SIZE: 0.750 INCHES IN
•
BEARING SURFACE TYPE: CHAMFERED
•
THREAD QUANTITY PER INCH: 16
•
THREAD SERIES: UNF
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD CLASS: 3B
•
NUT HEIGHT: 0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLEHEXAGON
NOMINAL THREAD SIZE0.750 INCHES IN
BEARING SURFACE TYPECHAMFERED
THREAD QUANTITY PER INCH16
THREAD SERIESUNF
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS3B
NUT HEIGHT0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 4140 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
1315-8Interchangeable
interchangeable cross-reference
interchangeable
247ASC2764-001Interchangeable
interchangeable cross-reference
interchangeable
TTM635VMEInterchangeable
interchangeable cross-reference
interchangeable
G780774-1Interchangeable
interchangeable cross-reference
interchangeable
TTM635VME-VCX0Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 13-158?
13-158 is a ELECTRONIC MODULE,STANDARDIZED.
What parts can replace 13-158?
There are 5 known substitutes for 13-158: 1315-8, 247ASC2764-001, TTM635VME and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 13-158?
13-158 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-220-6683. 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