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MA361-21047 — Technical Data Sheet

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— · 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 WASHER,FLAT is a the manufacturer industrial component. Key specifications include hole_diameter: 0.370 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN, overall_diameter: 0.875 INCHES NOMINAL IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND, cross-sectional_shape_style: RECTANGULAR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5310-01-146-6150, 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
MA361-21047
NSN: 5310-01-146-6150
FSC: 5310
CAGE: 34623 — AM GENERAL LLC (USA)
SPECIFICATIONS
hole_diameter0.370 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
overall_diameter0.875 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-01-146-6150
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MA361-21047 · 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
•
CENTER HOLE SHAPE STYLE: ROUND
•
OVERALL DIAMETER: 0.875 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.370 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
•
PERIPHERAL SHAPE STYLE: ROUND
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
TECHNICAL CHARACTERISTICS
CENTER HOLE SHAPE STYLEROUND
OVERALL DIAMETER0.875 INCHES NOMINAL IN
HOLE DIAMETER0.370 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
PERIPHERAL SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
5139101InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
P54InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
103031InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
10303-2InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
10303InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
105X40R100InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MA361-21047?
MA361-21047 is a WASHER,FLAT.
What parts can replace MA361-21047?
There are 7 known substitutes for MA361-21047: 5139101, P54, 103031 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MA361-21047?
MA361-21047 is cataloged in the Federal Logistics Information System under NSN 5310-01-146-6150. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: September 2026