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Technical Data Sheet
PartsTable / COMPONENT / 68-4-4
68-4-4 ✓ 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

PNEUMATIC MUFFLER,EXHAUST-INTAKE. Key specifications include length: 16.000 FEET NOMINAL FT, diameter: 0.312 INCHES NOMINAL IN, material: ALUMINUM LOCATION NOT OTHERWISE SPECIFIED, body_shape: ROUND, body_style: STRAIGHT THRU, body_width: 3.370 INCHES NOMINAL 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 5315-00-010-8658, 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
68-4-4
NSN: 5315-00-010-8658
FSC: 5315
CAGE: 34623 — AM GENERAL LLC (USA)
SPECIFICATIONS
length16.000 FEET NOMINAL FT
diameter0.312 INCHES NOMINAL IN
materialALUMINUM LOCATION NOT OTHERWISE SPECIFIED
body_shapeROUND
body_styleSTRAIGHT THRU
body_width3.370 INCHES NOMINAL IN
body_height5.250 INCHES NOMINAL IN
body_length3.930 INCHES NOMINAL IN
thread_class2A FIRST END A
footwear_size9 TO 10
overall_width0.567 INCHES NOMINAL IN
heat_treatmentT-5 SOLUTION HEAT TREATED
NSN5315-00-010-8658
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 68-4-4 · 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: STEEL OVERALL
•
STYLE DESIGNATOR: STANDARD
•
NONDEFINITIVE SPEC/STD DATA: B TYPE
•
DIAMETER: 0.312 INCHES NOMINAL IN
•
UNDERLOOP LENGTH: 2.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
STYLE DESIGNATORSTANDARD
NONDEFINITIVE SPEC/STD DATAB TYPE
DIAMETER0.312 INCHES NOMINAL IN
UNDERLOOP LENGTH2.500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
792-402952Interchangeable
interchangeable cross-reference
interchangeable
6844Interchangeable
interchangeable cross-reference
interchangeable
14560AInterchangeable
interchangeable cross-reference
interchangeable
ASTM B221Interchangeable
interchangeable cross-reference
interchangeable
AMS-QQ-A-200/9Interchangeable
interchangeable cross-reference
interchangeable
SAE-J512Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 68-4-4?
68-4-4 is a PNEUMATIC MUFFLER,EXHAUST-INTAKE.
What parts can replace 68-4-4?
There are 16 known substitutes for 68-4-4: 792-402952, 6844, 14560A and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 68-4-4?
68-4-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-010-8658. 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