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138479 ✓ 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

CONNECTOR,RECEPTACLE,ELECTRICAL. Key specifications include body_style: STRAIGHT SHAPE, EXTERNAL COUPLING, shell_type: SOLID, thread_class: 2A A, hole_diameter: 0.195 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN, overall_width: 1.625 INCHES NOMINAL IN, terminal_type: PIN SINGLE MATING END SINGLE CONTACT GROUPING. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-596-7691, 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
138479
NSN: 5310-00-596-7691
FSC: 5310
CAGE: 29930 — INTERNATIONAL HARVESTER CO AGRICULTURAL EQUIPMENT DIV (USA)
SPECIFICATIONS
materialSTEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1059 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OVERALL
body_styleSTRAIGHT SHAPE, EXTERNAL COUPLING
shell_typeSOLID
thread_class2A A
hole_diameter0.195 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN
overall_width1.625 INCHES NOMINAL IN
terminal_typePIN SINGLE MATING END SINGLE CONTACT GROUPING
overall_height1.625 INCHES NOMINAL IN
overall_length1.938 INCHES MAXIMUM IN
shell_materialALUMINUM ALLOY
hardness_rating40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
outside_diameter0.395 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN
NSN5310-00-596-7691
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 138479 · 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
•
OUTSIDE DIAMETER: 0.395 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
STYLE DESIGNATOR: FLAT EXTERNAL TEETH
•
MATERIAL: STEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1059 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OVERALL
•
HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
•
MATERIAL THICKNESS: 0.020 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER0.395 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
STYLE DESIGNATORFLAT EXTERNAL TEETH
MATERIALSTEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1059 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OVERALL
HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
MATERIAL THICKNESS0.020 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN
END ITEM IDENTIFICATIONW/S:SHIPBOARD MATERIAL HANDLING EQUIPMENT (MHE); AIRBORNE MOBILE DIR AIR SPT CTL (2ID),(02M JUL83)(AN/UYQ-3A); AIRCRAFT (AC-130H, MC-130H, EC-130E, HC-130); CLOSE IN WEAPON SYSTEM (CIWS-PHALANX); SUPPORT EQUIPMENT, B-1 AIRCRAFT; MISSILE, AIR INTERCEPT, SIDEWINDER (AIM-9); FIRE CONTROL SYSTEM, MISSILE MK 74 (FCS); ENGINE, AIRCRAFT TF33-P-3/5/9 (C/EC-135, B-52H); GUN MOUNT, MK 75 (GM); FIRE PUMPS; MULTIPLE LAUNCH ROCKET SYSTEM (MLRS); ARMORED MULTI-PURPOSE VEHICLE (AMPV) A
HOLE DIAMETER0.195 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
407-128Interchangeable
interchangeable cross-reference
interchangeable
FFS92TYPE1STYLE4SInterchangeable
interchangeable cross-reference
interchangeable
104-108-89Interchangeable
interchangeable cross-reference
interchangeable
9815-01Interchangeable
interchangeable cross-reference
interchangeable
9815Interchangeable
interchangeable cross-reference
interchangeable
656193Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 138479?
138479 is a CONNECTOR,RECEPTACLE,ELECTRICAL.
What parts can replace 138479?
There are 23 known substitutes for 138479: 407-128, FFS92TYPE1STYLE4S, 104-108-89 and 20 more. Substitute compatibility should be verified for your specific system.
Is 138479 still available?
138479 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