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Technical Data Sheet
PartsTable / COMPONENT / 01905-2177
01905-2177 ✓ 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 WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1020 OVERALL, thickness: 0.125 INCHES NOMINAL IN, hole_diameter: 0.656 INCHES NOMINAL IN, overall_diameter: 1.125 INCHES NOMINAL IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-595-5228, 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
01905-2177
NSN: 5310-00-595-5228
FSC: 5310
CAGE: 93568 — HARSCO CORP BMY-COMBAT SYSTEMS DIV (USA)
SPECIFICATIONS
materialSTEEL COMP 1020 OVERALL
thickness0.125 INCHES NOMINAL IN
hole_diameter0.656 INCHES NOMINAL IN
overall_diameter1.125 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationQQ-S-633 CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-595-5228
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 01905-2177 · 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
•
OVERALL DIAMETER: 1.125 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633 CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THICKNESS: 0.125 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 1020 OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.656 INCHES NOMINAL IN
•
CENTER HOLE SHAPE STYLE: ROUND
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL DIAMETER1.125 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633 CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THICKNESS0.125 INCHES NOMINAL IN
MATERIALSTEEL COMP 1020 OVERALL
PERIPHERAL SHAPE STYLEROUND
HOLE DIAMETER0.656 INCHES NOMINAL IN
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
6516-2Interchangeable
interchangeable cross-reference
interchangeable
4P94324-102AInterchangeable
interchangeable cross-reference
interchangeable
MS25436-12Interchangeable
interchangeable cross-reference
interchangeable
11069865Interchangeable
interchangeable cross-reference
interchangeable
J6048-001Interchangeable
interchangeable cross-reference
interchangeable
251001T01BXUC100PSIInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 01905-2177?
01905-2177 is a WASHER,FLAT.
What parts can replace 01905-2177?
There are 7 known substitutes for 01905-2177: 6516-2, 4P94324-102A, MS25436-12 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 01905-2177?
01905-2177 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-595-5228. 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