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54A50A66 — SETSCREW

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

54A50A66: SETSCREW.

The SETSCREW is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, head_style: HEADLESS (SETSCREW), point_style: CUP, thread_class: 2A A, thread_length: 0.313 INCHES MINIMUM IN, fastener_length: 0.313 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-075-2412, 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
54A50A66
NSN: 5305-00-075-2412
FSC: 5305 — Screws
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
head_styleHEADLESS (SETSCREW)
point_styleCUP
thread_class2A A
thread_length0.313 INCHES MINIMUM IN
fastener_length0.313 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_across_flats0.078 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN
internal_drive_styleHEXAGON
nominal_thread_diameter0.164 INCHES IN
thread_quantity_per_inch32
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5305-00-075-2412
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 54A50A66 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
WIDTH ACROSS FLATS: 0.078 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.313 INCHES NOMINAL IN
•
THREAD LENGTH: 0.313 INCHES MINIMUM IN
•
NOMINAL THREAD DIAMETER: 0.164 INCHES IN
•
HEAD STYLE: HEADLESS (SETSCREW)
•
THREAD DIRECTION: RIGHT-HAND
•
POINT STYLE: CUP
•
INTERNAL DRIVE STYLE: HEXAGON
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.078 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN
FASTENER LENGTH0.313 INCHES NOMINAL IN
THREAD LENGTH0.313 INCHES MINIMUM IN
NOMINAL THREAD DIAMETER0.164 INCHES IN
HEAD STYLEHEADLESS (SETSCREW)
THREAD DIRECTIONRIGHT-HAND
POINT STYLECUP
INTERNAL DRIVE STYLEHEXAGON
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
THREAD CLASS2A A
SUBSTITUTES & CROSS-REFERENCES 1
20762Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 54A50A66?
54A50A66 is a SETSCREW.
What parts can replace 54A50A66?
There is 1 known substitute for 54A50A66: 20762. Substitute compatibility should be verified for your specific system.
What is the NSN for 54A50A66?
54A50A66 is cataloged in the U.S. Government catalog under NSN 5305-00-075-2412. 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.