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Technical Data Sheet
PartsTable / COMPONENT / 3109208
3109208 ✓ 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 BOLT,SQUARE NECK is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1020 OVERALL, head_style: HEXAGON, neck_width: 0.625 INCHES NOMINAL IN, head_height: 0.531 INCHES NOMINAL IN, neck_length: 0.188 INCHES NOMINAL IN, thread_class: 2A A. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-274-8058, 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
3109208
NSN: 5306-00-274-8058
FSC: 5306
CAGE: 73830 — GERSTENLAGER CO THE (USA)
SPECIFICATIONS
materialSTEEL COMP 1020 OVERALL
head_styleHEXAGON
neck_width0.625 INCHES NOMINAL IN
head_height0.531 INCHES NOMINAL IN
neck_length0.188 INCHES NOMINAL IN
thread_class2A A
thread_length0.750 INCHES MINIMUM IN
fastener_length6.250 INCHES NOMINAL IN
special_featuresDRILLED FOR COTTER PIN 6.094 FROM HEAD-0.156 DIA
thread_directionRIGHT-HAND
width_between_flats0.875 INCHES NOMINAL IN
nominal_thread_diameter0.625 INCHES IN
NSN5306-00-274-8058
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3109208 · 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
•
NECK LENGTH: 0.188 INCHES NOMINAL IN
•
THREAD LENGTH: 0.750 INCHES MINIMUM IN
•
WIDTH BETWEEN FLATS: 0.875 INCHES NOMINAL IN
•
HEAD STYLE: HEXAGON
•
FASTENER LENGTH: 6.250 INCHES NOMINAL IN
•
NECK WIDTH: 0.625 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.531 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 18
TECHNICAL CHARACTERISTICS (FLIS)
NECK LENGTH0.188 INCHES NOMINAL IN
THREAD LENGTH0.750 INCHES MINIMUM IN
WIDTH BETWEEN FLATS0.875 INCHES NOMINAL IN
HEAD STYLEHEXAGON
FASTENER LENGTH6.250 INCHES NOMINAL IN
NECK WIDTH0.625 INCHES NOMINAL IN
HEAD HEIGHT0.531 INCHES NOMINAL IN
THREAD QUANTITY PER INCH18
NOMINAL THREAD DIAMETER0.625 INCHES IN
THREAD CLASS2A A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
14120Interchangeable
interchangeable cross-reference
interchangeable
507299Interchangeable
interchangeable cross-reference
interchangeable
CL55S49-4PC41-43-47T049Interchangeable
interchangeable cross-reference
interchangeable
D15-625D-PC41-43-47T049Interchangeable
interchangeable cross-reference
interchangeable
4922Interchangeable
interchangeable cross-reference
interchangeable
PA305Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3109208?
3109208 is a BOLT,SQUARE NECK.
What parts can replace 3109208?
There are 19 known substitutes for 3109208: 14120, 507299, CL55S49-4PC41-43-47T049 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3109208?
3109208 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-274-8058. 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