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52W2081-4 — SETSCREW

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

52W2081-4: SETSCREW.

The SETSCREW is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: HEADLESS (SETSCREW), point_style: FLAT, spline_width: 0.010 INCHES MINIMUM AND 0.011 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 0.749 INCHES MINIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-075-5965, 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
52W2081-4
NSN: 5305-00-075-5965
FSC: 5305 — Screws
CAGE: 21439 — CURTISS-WRIGHT FLOW CONTROL SERVICE, LLC DBA ENGINEERED ARRESTING SYSTEMS - ESCO DIV CW FLOW CONTROL SVC LLC DBA (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleHEADLESS (SETSCREW)
point_styleFLAT
spline_width0.010 INCHES MINIMUM AND 0.011 INCHES MAXIMUM IN
thread_class2A A
thread_length0.749 INCHES MINIMUM IN
fastener_length0.843 INCHES NOMINAL IN
hardness_rating38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
internal_drive_styleSIX SPLINE
spline_major_diameter0.049 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
spline_minor_diameter0.040 INCHES MINIMUM AND 0.041 INCHES MAXIMUM IN
NSN5305-00-075-5965
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 52W2081-4 · 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
•
SPLINE MINOR DIAMETER: 0.040 INCHES MINIMUM AND 0.041 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.843 INCHES NOMINAL IN
•
SPLINE WIDTH: 0.010 INCHES MINIMUM AND 0.011 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.749 INCHES MINIMUM IN
•
HARDNESS RATING: 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
•
SPLINE MAJOR DIAMETER: 0.049 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.312 INCHES IN
•
HEAD STYLE: HEADLESS (SETSCREW)
TECHNICAL CHARACTERISTICS
SPLINE MINOR DIAMETER0.040 INCHES MINIMUM AND 0.041 INCHES MAXIMUM IN
FASTENER LENGTH0.843 INCHES NOMINAL IN
SPLINE WIDTH0.010 INCHES MINIMUM AND 0.011 INCHES MAXIMUM IN
THREAD LENGTH0.749 INCHES MINIMUM IN
HARDNESS RATING38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
SPLINE MAJOR DIAMETER0.049 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.312 INCHES IN
HEAD STYLEHEADLESS (SETSCREW)
THREAD DIRECTIONRIGHT-HAND
POINT STYLEFLAT
SUBSTITUTES & CROSS-REFERENCES 3
905311Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
5305PL0791602Reference document
Same NSN cross-reference
Reference document — Informative reference only
756171121200Reference document
Same NSN cross-reference
Reference document — Informative reference only
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 52W2081-4?
52W2081-4 is a SETSCREW.
What parts can replace 52W2081-4?
There are 3 known substitutes for 52W2081-4: 905311, 5305PL0791602, 756171121200. Substitute compatibility should be verified for your specific system.
What is the NSN for 52W2081-4?
52W2081-4 is cataloged in the U.S. Government catalog under NSN 5305-00-075-5965. 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.