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MU141A ✓ 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 KEY,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, overall_width: 0.437 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN, overall_height: 0.312 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN, overall_length: 2.245 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN, hardness_rating: 45.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM OVERALL, style_designator: PLAIN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-054-3038, 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
MU141A
NSN: 5315-00-054-3038
FSC: 5315
CAGE: 08302 — PACCAR WINCH INC DBA PACCAR WINCH DIVISION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_width0.437 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
overall_height0.312 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
overall_length2.245 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN
hardness_rating45.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM OVERALL
style_designatorPLAIN
starting_edge_shapeSTRAIGHT
NSN5315-00-054-3038
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MU141A · 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
•
STYLE DESIGNATOR: PLAIN
•
MATERIAL: STEEL OVERALL
•
HARDNESS RATING: 45.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM OVERALL
•
STARTING EDGE SHAPE: STRAIGHT
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH2.245 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN
STYLE DESIGNATORPLAIN
MATERIALSTEEL OVERALL
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM OVERALL
STARTING EDGE SHAPESTRAIGHT
OVERALL WIDTH0.437 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
OVERALL HEIGHT0.312 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
1775875Interchangeable
interchangeable cross-reference
interchangeable
69047-1Interchangeable
interchangeable cross-reference
interchangeable
69047Interchangeable
interchangeable cross-reference
interchangeable
AS568-260Interchangeable
interchangeable cross-reference
interchangeable
AS568-260-36624Interchangeable
interchangeable cross-reference
interchangeable
2-260 N304-75Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MU141A?
MU141A is a KEY,MACHINE.
What parts can replace MU141A?
There are 16 known substitutes for MU141A: 1775875, 69047-1, 69047 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MU141A?
MU141A is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-054-3038. 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