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Technical Data Sheet
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1A8537 — 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 NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1212 OVERALL, nut_style: HEXAGON, nut_height: 0.453 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNF, thread_direction: RIGHT-HAND. This part is cataloged in the Federal Logistics Information System under NSN 5310-00-222-7234, 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
1A8537
NSN: 5310-00-222-7234
FSC: 5310
CAGE: 95201 — NAPCO INTERNATIONAL LLC DBA NAPCO INTERNATIONAL INC (USA)
SPECIFICATIONS
materialSTEEL COMP 1212 OVERALL
nut_styleHEXAGON
nut_height0.453 INCHES NOMINAL IN
thread_class3B
thread_seriesUNF
thread_directionRIGHT-HAND
features_providedCASEHARDENED
width_across_flats0.625 INCHES NOMINAL IN
nominal_thread_size0.438 INCHES IN
bearing_surface_typeWASHER FACED
thread_quantity_per_inch20
material_document_and_classificationAISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-222-7234
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1A8537 · 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
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH ACROSS FLATS: 0.625 INCHES NOMINAL IN
•
FEATURES PROVIDED: CASEHARDENED
•
THREAD SERIES: UNF
•
THREAD QUANTITY PER INCH: 20
•
NOMINAL THREAD SIZE: 0.438 INCHES IN
•
BEARING SURFACE TYPE: WASHER FACED
•
MATERIAL: STEEL COMP 1212 OVERALL
TECHNICAL CHARACTERISTICS
THREAD DIRECTIONRIGHT-HAND
WIDTH ACROSS FLATS0.625 INCHES NOMINAL IN
FEATURES PROVIDEDCASEHARDENED
THREAD SERIESUNF
THREAD QUANTITY PER INCH20
NOMINAL THREAD SIZE0.438 INCHES IN
BEARING SURFACE TYPEWASHER FACED
MATERIALSTEEL COMP 1212 OVERALL
NUT STYLEHEXAGON
NUT HEIGHT0.453 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
85-2046InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
15354InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
504-8559-003InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
588 9InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
21779InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
19956InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLEDGOVERNMENT REGISTRY
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1A8537?
1A8537 is a NUT,PLAIN,HEXAGON.
What parts can replace 1A8537?
There are 17 known substitutes for 1A8537: 85-2046, 15354, 504-8559-003 and 14 more. Substitute compatibility should be verified for your specific system.
Is 1A8537 still available?
1A8537 is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: September 2026