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PartsTable / COMPONENT / 3109140
3109140 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.562 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 1.750 INCHES MINIMUM IN, fastener_length: 5.000 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-021-6390, 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
3109140
NSN: 5305-00-021-6390
FSC: 5305
CAGE: 73830 — GERSTENLAGER CO THE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.562 INCHES NOMINAL IN
thread_class2A A
thread_length1.750 INCHES MINIMUM IN
fastener_length5.000 INCHES NOMINAL IN
hardness_rating100.0 ROCKWELL B MAXIMUM OVERALL
thread_directionRIGHT-HAND
width_between_flats1.000 INCHES NOMINAL IN
nominal_thread_diameter0.750 INCHES IN
minimum_tensile_strength64000 POUNDS PER SQUARE INCH LBS
thread_quantity_per_inch16
NSN5305-00-021-6390
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3109140 · 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
•
HEAD HEIGHT: 0.562 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.750 INCHES IN
•
WIDTH BETWEEN FLATS: 1.000 INCHES NOMINAL IN
•
THREAD LENGTH: 1.750 INCHES MINIMUM IN
•
MINIMUM TENSILE STRENGTH: 64000 POUNDS PER SQUARE INCH LBS
•
THREAD SERIES DESIGNATOR: UNF
•
MATERIAL: STEEL OVERALL
•
HARDNESS RATING: 100.0 ROCKWELL B MAXIMUM OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
HEAD HEIGHT0.562 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.750 INCHES IN
WIDTH BETWEEN FLATS1.000 INCHES NOMINAL IN
THREAD LENGTH1.750 INCHES MINIMUM IN
MINIMUM TENSILE STRENGTH64000 POUNDS PER SQUARE INCH LBS
THREAD SERIES DESIGNATORUNF
MATERIALSTEEL OVERALL
HARDNESS RATING100.0 ROCKWELL B MAXIMUM OVERALL
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 10P STYLE AND 2 GRADE
THREAD QUANTITY PER INCH16
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
550-BInterchangeable
interchangeable cross-reference
interchangeable
24676Interchangeable
interchangeable cross-reference
interchangeable
45627Interchangeable
interchangeable cross-reference
interchangeable
B19782Interchangeable
interchangeable cross-reference
interchangeable
19782Interchangeable
interchangeable cross-reference
interchangeable
13426Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3109140?
3109140 is a SCREW,CAP,HEXAGON HEAD.
What parts can replace 3109140?
There are 12 known substitutes for 3109140: 550-B, 24676, 45627 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3109140?
3109140 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-021-6390. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026