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Technical Data Sheet
PartsTable / COMPONENT / 71-9156
71-9156 ✓ 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 NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), thread_direction: RIGHT-HAND, width_across_flats: 0.438 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 5310-01-021-4246, 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
71-9156
NSN: 5310-01-021-4246
FSC: 5310
CAGE: 53239 — COMPAIR KELLOGG DIV OF ROBERTSHAW CONTROLS CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
width_across_flats0.438 INCHES NOMINAL IN
nominal_thread_size0.250 INCHES IN
thread_quantity_per_inch20
NSN5310-01-021-4246
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 71-9156 · 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
•
WIDTH ACROSS FLATS: 0.438 INCHES NOMINAL IN
•
THREAD CLASS: 2B
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD QUANTITY PER INCH: 20
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
NUT STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
WIDTH ACROSS FLATS0.438 INCHES NOMINAL IN
THREAD CLASS2B
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH20
NOMINAL THREAD SIZE0.250 INCHES IN
NUT STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
9156Interchangeable
interchangeable cross-reference
interchangeable
14U1043PC9156Interchangeable
interchangeable cross-reference
interchangeable
378-0001-000Interchangeable
interchangeable cross-reference
interchangeable
86-71-3SInterchangeable
interchangeable cross-reference
interchangeable
300606REV2PT1Interchangeable
interchangeable cross-reference
interchangeable
712-50-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 71-9156?
71-9156 is a NUT,PLAIN,HEXAGON.
What parts can replace 71-9156?
There are 10 known substitutes for 71-9156: 9156, 14U1043PC9156, 378-0001-000 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 71-9156?
71-9156 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-021-4246. 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