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58FM-164 — NUT,SELF-LOCKING,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

58FM-164: NUT,SELF-LOCKING,HEXAGON.

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include nut_style: HEXAGON, nut_height: 0.092 INCHES MAXIMUM IN, thread_class: 3B, thread_series: UNJC, locking_feature: PREVAILING TORQUE ALL METAL DESIGN, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-125-6848, 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
58FM-164
NSN: 5310-01-125-6848
FSC: 5310 — Nuts and Washers
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)
SPECIFICATIONS
nut_styleHEXAGON
nut_height0.092 INCHES MAXIMUM IN
thread_class3B
thread_seriesUNJC
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
width_across_flats0.122 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN
nominal_thread_size0.073 INCHES IN
bearing_surface_typeFLAT
thread_quantity_per_inch64
NSN5310-01-125-6848
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 58FM-164 · 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: 0.122 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN
•
THREAD SERIES: UNJC
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.073 INCHES IN
•
LOCKING FEATURE: PREVAILING TORQUE ALL METAL DESIGN
•
NUT HEIGHT: 0.092 INCHES MAXIMUM IN
•
NUT STYLE: HEXAGON
•
THREAD CLASS: 3B
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.122 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN
THREAD SERIESUNJC
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.073 INCHES IN
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
NUT HEIGHT0.092 INCHES MAXIMUM IN
NUT STYLEHEXAGON
THREAD CLASS3B
THREAD QUANTITY PER INCH64
BEARING SURFACE TYPEFLAT
SUBSTITUTES & CROSS-REFERENCES 2
10109439Reference document
Same NSN cross-reference
Reference document — Informative reference only
2771841-101Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 58FM-164?
58FM-164 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 58FM-164?
There are 2 known substitutes for 58FM-164: 10109439, 2771841-101. Substitute compatibility should be verified for your specific system.
What is the NSN for 58FM-164?
58FM-164 is cataloged in the U.S. Government catalog under NSN 5310-01-125-6848. 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.