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338956 ✓ 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 SHAFT ASSEMBLY,CONTROL is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: ALUMINUM,QQ-A-351,CONDITION T; 8.969 IN. LG 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 5310-00-285-8144, 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
338956
NSN: 5310-00-285-8144
FSC: 5310
CAGE: 30205 — MERCER PRODUCTS & MANUFACTURING COMPANY DBA MERCER PRODUCTS & MANUFACTURING CO DIV MERCER PRODUCTS & MANUFACTURING (USA)
SPECIFICATIONS
general_characteristics_item_descriptionALUMINUM,QQ-A-351,CONDITION T; 8.969 IN. LG IN
NSN5310-00-285-8144
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 338956 · 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
•
HOLE DIAMETER: 1.031 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.150 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 8630 OVERALL
•
RECESS DIAMETER: 1.200 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 1.625 INCHES NOMINAL IN
•
RECESS ANGLE: 90.0 DEGREES NOMINAL
•
STYLE DESIGNATOR: RECESSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-6050 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
HOLE DIAMETER1.031 INCHES NOMINAL IN
MATERIAL THICKNESS0.150 INCHES NOMINAL IN
MATERIALSTEEL COMP 8630 OVERALL
RECESS DIAMETER1.200 INCHES NOMINAL IN
OUTSIDE DIAMETER1.625 INCHES NOMINAL IN
RECESS ANGLE90.0 DEGREES NOMINAL
STYLE DESIGNATORRECESSED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-6050 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
338956Interchangeable
interchangeable cross-reference
interchangeable
712843Interchangeable
interchangeable cross-reference
interchangeable
SC-B-96295Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 338956?
338956 is a SHAFT ASSEMBLY,CONTROL.
What parts can replace 338956?
There are 3 known substitutes for 338956: 338956, 712843, SC-B-96295. Substitute compatibility should be verified for your specific system.
What is the NSN for 338956?
338956 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-285-8144. 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