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ST3M445A5M2 — NUT,SELF-LOCKING,GANG CHANNEL

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

ST3M445A5M2: NUT,SELF-LOCKING,GANG CHANNEL.

The NUT,SELF-LOCKING,GANG CHANNEL is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: GANG CHANNEL, SELF LOCKING, base_width: 0.475 INCHES MINIMUM AND 0.485 INCHES MAXIMUM IN, nut_height: 0.344 INCHES MAXIMUM IN, nut_length: 0.722 INCHES MINIMUM AND 0.732 INCHES MAXIMUM IN, lubrication: DRY FILM LUBRICANT. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-239-8501, 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
ST3M445A5M2
NSN: 5310-01-239-8501
FSC: 5310 — Nuts and Washers
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleGANG CHANNEL, SELF LOCKING
base_width0.475 INCHES MINIMUM AND 0.485 INCHES MAXIMUM IN
nut_height0.344 INCHES MAXIMUM IN
nut_length0.722 INCHES MINIMUM AND 0.732 INCHES MAXIMUM IN
lubricationDRY FILM LUBRICANT
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
base_thickness0.050 INCHES MINIMUM AND 0.064 INCHES MAXIMUM IN
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
surface_treatmentCADMIUM AND CHROMATE OVERALL
NSN5310-01-239-8501
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: ST3M445A5M2 · 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
•
LUBRICATION: DRY FILM LUBRICANT
•
NUT LENGTH: 0.722 INCHES MINIMUM AND 0.732 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY2,CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
BASE WIDTH: 0.475 INCHES MINIMUM AND 0.485 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.312 INCHES IN
•
LOCKING FEATURE: PREVAILING TORQUE ALL METAL DESIGN
TECHNICAL CHARACTERISTICS
LUBRICATIONDRY FILM LUBRICANT
NUT LENGTH0.722 INCHES MINIMUM AND 0.732 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY2,CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
BASE WIDTH0.475 INCHES MINIMUM AND 0.485 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.312 INCHES IN
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
NUT HEIGHT0.344 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 3
10110195Reference document
Same NSN cross-reference
Reference document — Informative reference only
CN50063-5-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
G14421-2-5Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ST3M445A5M2?
ST3M445A5M2 is a NUT,SELF-LOCKING,GANG CHANNEL.
What parts can replace ST3M445A5M2?
There are 3 known substitutes for ST3M445A5M2: 10110195, CN50063-5-2, G14421-2-5. Substitute compatibility should be verified for your specific system.
What is the NSN for ST3M445A5M2?
ST3M445A5M2 is cataloged in the U.S. Government catalog under NSN 5310-01-239-8501. 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.