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PartsTable / COMPONENT / 10172-2
10172-2 ✓ 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 RELAY,ELECTROMAGNETIC is a the manufacturer industrial component. Key specifications include height: 0.625 INCHES NOMINAL IN, material: STEEL CORROSION RESISTING, duty_type: CONTINUOUS, nut_style: CAP, nut_height: 0.375 INCHES NOMINAL IN, flange_width: 1.750 INCHES NOMINAL 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 5310-00-187-4258, 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
10172-2
NSN: 5310-00-187-4258
FSC: 5310
CAGE: 64959 — AMERICAN TELEPHONE AND TELEGRAPH CO (USA)
SPECIFICATIONS
height0.625 INCHES NOMINAL IN
materialSTEEL CORROSION RESISTING
duty_typeCONTINUOUS
nut_styleCAP
nut_height0.375 INCHES NOMINAL IN
flange_width1.750 INCHES NOMINAL IN
thread_class2B
coil_quantity1
flange_length1.750 INCHES NOMINAL IN
overall_width2.656 INCHES NOMINAL IN
thread_seriesUNIFIED NATIONAL COARSE (UNC)
overall_height3.406 INCHES MAXIMUM IN
NSN5310-00-187-4258
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 10172-2 · 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
•
WIDTH ACROSS FLATS: 0.438 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 20
•
BEARING SURFACE TYPE: WASHER FACED
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
NUT HEIGHT: 0.375 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY OVERALL
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH ACROSS FLATS0.438 INCHES NOMINAL IN
THREAD QUANTITY PER INCH20
BEARING SURFACE TYPEWASHER FACED
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
NOMINAL THREAD SIZE0.250 INCHES IN
NUT HEIGHT0.375 INCHES NOMINAL IN
MATERIALCOPPER ALLOY OVERALL
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS2B
NUT STYLECAP
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
150PL2Interchangeable
interchangeable cross-reference
interchangeable
AN8008Interchangeable
interchangeable cross-reference
interchangeable
AN8008D5Interchangeable
interchangeable cross-reference
interchangeable
H-X9A-101Interchangeable
interchangeable cross-reference
interchangeable
10-1722Interchangeable
interchangeable cross-reference
interchangeable
10-1722-3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 10172-2?
10172-2 is a RELAY,ELECTROMAGNETIC.
What parts can replace 10172-2?
There are 9 known substitutes for 10172-2: 150PL2, AN8008, AN8008D5 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 10172-2?
10172-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-187-4258. 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