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2A1139 — SETSCREW

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

2A1139: SETSCREW.

The SETSCREW is a the manufacturer industrial component. Key specifications include material: STEEL COMP E52100 OVERALL, head_style: HEXAGON, head_height: 0.562 INCHES NOMINAL IN, point_style: CHAMFER DOG, point_length: 0.562 INCHES NOMINAL IN, thread_class: 2A A. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-263-3548, 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
2A1139
NSN: 5305-00-263-3548
FSC: 5305 — Screws
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL COMP E52100 OVERALL
head_styleHEXAGON
head_height0.562 INCHES NOMINAL IN
point_styleCHAMFER DOG
point_length0.562 INCHES NOMINAL IN
thread_class2A A
thread_length0.938 INCHES MINIMUM IN
point_diameter0.609 INCHES NOMINAL IN
fastener_length1.500 INCHES NOMINAL IN
hardness_rating30.0 ROCKWELL C NOMINAL OVERALL
thread_directionRIGHT-HAND
width_between_flats1.125 INCHES NOMINAL IN
NSN5305-00-263-3548
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 2A1139 · 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
•
POINT DIAMETER: 0.609 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.562 INCHES NOMINAL IN
•
POINT LENGTH: 0.562 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.500 INCHES NOMINAL IN
•
THREAD LENGTH: 0.938 INCHES MINIMUM IN
•
HARDNESS RATING: 30.0 ROCKWELL C NOMINAL OVERALL
•
NOMINAL THREAD DIAMETER: 0.750 INCHES IN
•
HEAD STYLE: HEXAGON
TECHNICAL CHARACTERISTICS
POINT DIAMETER0.609 INCHES NOMINAL IN
HEAD HEIGHT0.562 INCHES NOMINAL IN
POINT LENGTH0.562 INCHES NOMINAL IN
FASTENER LENGTH1.500 INCHES NOMINAL IN
THREAD LENGTH0.938 INCHES MINIMUM IN
HARDNESS RATING30.0 ROCKWELL C NOMINAL OVERALL
NOMINAL THREAD DIAMETER0.750 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
POINT STYLECHAMFER DOG
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2A1139?
2A1139 is a SETSCREW.
What is the NSN for 2A1139?
2A1139 is cataloged in the U.S. Government catalog under NSN 5305-00-263-3548. 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.