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F50340-4-1 — NUT,SELF-LOCKING,PLATE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

F50340-4-1: NUT,SELF-LOCKING,PLATE.

The NUT,SELF-LOCKING,PLATE is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: PLATE, nut_height: 0.282 INCHES MAXIMUM IN, nut_length: 1.306 INCHES MAXIMUM IN, lubrication: DRY FILM LUBRICANT, plate_width: 0.531 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-101-7255, 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
F50340-4-1
NSN: 5310-01-101-7255
FSC: 5310 — Nuts and Washers
CAGE: 15653 — HOWMET GLOBAL FASTENING SYSTEMS INC (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
nut_stylePLATE
nut_height0.282 INCHES MAXIMUM IN
nut_length1.306 INCHES MAXIMUM IN
lubricationDRY FILM LUBRICANT
plate_width0.531 INCHES MAXIMUM IN
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
locking_featurePREVAILING TORQUE ALL METAL DESIGN
plate_thickness0.032 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
features_providedFLOATING NUT
NSN5310-01-101-7255
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: F50340-4-1 · 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
•
PLATE THICKNESS: 0.032 INCHES MAXIMUM IN
•
NUT LENGTH: 1.306 INCHES MAXIMUM IN
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
PLATE WIDTH: 0.531 INCHES MAXIMUM IN
•
MOUNTING HOLE ARRANGEMENT STYLE: 2 HOLES
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MOUNTING HOLE DIAMETER: 0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
LUBRICATIONDRY FILM LUBRICANT
PLATE THICKNESS0.032 INCHES MAXIMUM IN
NUT LENGTH1.306 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
PLATE WIDTH0.531 INCHES MAXIMUM IN
MOUNTING HOLE ARRANGEMENT STYLE2 HOLES
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MOUNTING HOLE DIAMETER0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
NUT COUNTERBORE DEPTH0.062 INCHES MINIMUM NUT IN
FEATURES PROVIDEDFLOATING NUT
SUBSTITUTES & CROSS-REFERENCES 5
10122140Reference document
Same NSN cross-reference
Reference document — Informative reference only
F12089-1-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
BFN720C4M1Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
NS202184-048-1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
ST3M720C4M1Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is F50340-4-1?
F50340-4-1 is a NUT,SELF-LOCKING,PLATE.
What parts can replace F50340-4-1?
There are 5 known substitutes for F50340-4-1: 10122140, F12089-1-4, BFN720C4M1 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for F50340-4-1?
F50340-4-1 is cataloged in the U.S. Government catalog under NSN 5310-01-101-7255. 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.