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68M632 — NUT,SELF-LOCKING,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

68M632: NUT,SELF-LOCKING,HEXAGON.

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON LOCKING INSERT, nut_style: HEXAGON, nut_height: 0.178 INCHES NOMINAL IN, temp_rating: 250.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL COARSE (UNC). This part is cataloged in the U.S.

Government catalog under NSN 5310-00-680-7543, 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
68M632
NSN: 5310-00-680-7543
FSC: 5310 — Nuts and Washers
CAGE: 75237 — HOWMET GLOBAL FASTENING SYSTEMS INC. DIV MICRODOT PRODUCTS (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON LOCKING INSERT
nut_styleHEXAGON
nut_height0.178 INCHES NOMINAL IN
temp_rating250.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
surface_treatmentANODIZE NUT
width_across_flats0.308 INCHES NOMINAL IN
nominal_thread_size0.138 INCHES IN
bearing_surface_typeFLAT
NSN5310-00-680-7543
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 68M632 · 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: 0.308 INCHES NOMINAL IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
TEMP RATING: 250.0 FAHRENHEIT NOMINAL DEGF
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.138 INCHES IN
•
LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT
•
NUT HEIGHT: 0.178 INCHES NOMINAL IN
•
SURFACE TREATMENT: ANODIZE NUT
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.308 INCHES NOMINAL IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
TEMP RATING250.0 FAHRENHEIT NOMINAL DEGF
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.138 INCHES IN
LOCKING FEATUREPREVAILING TORQUE WITH NONMETALLIC INSERT
NUT HEIGHT0.178 INCHES NOMINAL IN
SURFACE TREATMENTANODIZE NUT
NUT STYLEHEXAGON
THREAD CLASS3B
SUBSTITUTES & CROSS-REFERENCES 2
203-1011P45Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
68NM62Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 68M632?
68M632 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 68M632?
There are 2 known substitutes for 68M632: 203-1011P45, 68NM62. Substitute compatibility should be verified for your specific system.
What is the NSN for 68M632?
68M632 is cataloged in the U.S. Government catalog under NSN 5310-00-680-7543. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.