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Technical Data Sheet
PartsTable / MRO / 201251
201251 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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 FUSEHOLDER ASSEMBLY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.031 INCHES NOMINAL IN, hole_diameter: 0.173 INCHES NOMINAL IN, overall_diameter: 0.375 INCHES NOMINAL IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-270-2123, 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
MRO→ MRO_GENERAL→ 201251
NSN: 5310-00-270-2123
FSC: 5310
CAGE: 21119 — EVINRUDE MOTORS PRODUCT GROUP OF OUTBOARD MARINE CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.031 INCHES NOMINAL IN
hole_diameter0.173 INCHES NOMINAL IN
overall_diameter0.375 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-270-2123
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 201251 · 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
•
THICKNESS: 0.031 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.173 INCHES NOMINAL IN
•
CENTER HOLE SHAPE STYLE: ROUND
•
OVERALL DIAMETER: 0.375 INCHES NOMINAL IN
•
PERIPHERAL SHAPE STYLE: ROUND
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
THICKNESS0.031 INCHES NOMINAL IN
HOLE DIAMETER0.173 INCHES NOMINAL IN
CENTER HOLE SHAPE STYLEROUND
OVERALL DIAMETER0.375 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
B-13-MInterchangeable
interchangeable cross-reference
interchangeable
G606-MInterchangeable
interchangeable cross-reference
interchangeable
50699Interchangeable
interchangeable cross-reference
interchangeable
201251Interchangeable
interchangeable cross-reference
interchangeable
8B2271Interchangeable
interchangeable cross-reference
interchangeable
12343JInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 201251?
201251 is a FUSEHOLDER ASSEMBLY. It is classified as a MRO (MRO_GENERAL).
What parts can replace 201251?
There are 14 known substitutes for 201251: B-13-M, G606-M, 50699 and 11 more. Substitute compatibility should be verified for your specific system.
Is 201251 still available?
201251 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