PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 074L
074L ✓ 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,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL PROPERTY CLASS 18.8 OVERALL, head_style: ROOF, head_height: 0.160 INCHES NOMINAL IN, head_diameter: 0.540 INCHES NOMINAL IN, fastener_length: 0.750 INCHES NOMINAL IN, thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-651-8414, 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
074L
NSN: 5305-01-651-8414
FSC: 5305
CAGE: 0KMA3 — ADAMS NUT AND BOLT CO INC (USA)
SPECIFICATIONS
materialSTEEL PROPERTY CLASS 18.8 OVERALL
head_styleROOF
head_height0.160 INCHES NOMINAL IN
head_diameter0.540 INCHES NOMINAL IN
fastener_length0.750 INCHES NOMINAL IN
thread_directionRIGHT-HAND
width_across_flats0.190 INCHES NOMINAL IN
internal_drive_styleHEXAGON
end_item_identification6115-01-591-1161;GENERATOR,HEATING AND AIR CONDITIONER
nominal_thread_diameter0.310 INCHES IN
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
extended_washer_thickness0.030 INCHES NOMINAL IN
NSN5305-01-651-8414
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 074L · 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
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
WIDTH ACROSS FLATS: 0.190 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.160 INCHES NOMINAL IN
•
HEAD DIAMETER: 0.540 INCHES NOMINAL IN
•
EXTENDED WASHER THICKNESS: 0.030 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.310 INCHES IN
•
FASTENER LENGTH: 0.750 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
WIDTH ACROSS FLATS0.190 INCHES NOMINAL IN
HEAD HEIGHT0.160 INCHES NOMINAL IN
HEAD DIAMETER0.540 INCHES NOMINAL IN
EXTENDED WASHER THICKNESS0.030 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.310 INCHES IN
FASTENER LENGTH0.750 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
HEAD STYLEROOF
PART NAME ASSIGNED BY CONTROLLING AGENCYSCREW BTN HEX
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
172559Interchangeable
interchangeable cross-reference
interchangeable
1066281Interchangeable
interchangeable cross-reference
interchangeable
63017Interchangeable
interchangeable cross-reference
interchangeable
BM11378-100Interchangeable
interchangeable cross-reference
interchangeable
WW-P-471Interchangeable
interchangeable cross-reference
interchangeable
AA59616BDQBCECInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 074L?
074L is a SCREW,CAP,SOCKET HEAD.
What parts can replace 074L?
There are 7 known substitutes for 074L: 172559, 1066281, 63017 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 074L?
074L is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-651-8414. 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