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Technical Data Sheet
PartsTable / COMPONENT / 121926
121926 ✓ 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 head_style: KNURLED NO. 1, head_height: 0.160 INCHES NOMINAL IN, point_style: FLAT, thread_class: 2A A, head_diameter: 0.344 INCHES NOMINAL IN, thread_length: 0.480 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 5305-00-012-1926, 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
121926
NSN: 5305-00-012-1926
FSC: 5305
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
head_styleKNURLED NO. 1
head_height0.160 INCHES NOMINAL IN
point_styleFLAT
thread_class2A A
head_diameter0.344 INCHES NOMINAL IN
thread_length0.480 INCHES NOMINAL IN
point_diameter0.134 INCHES NOMINAL IN
internal_drive_styleSLOT
NSN5305-00-012-1926
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 121926 · 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
•
MATERIAL: STEEL OVERALL
•
MINIMUM YIELD STRENGTH: 55000 POUNDS PER SQUARE INCH LBS
•
HARDNESS RATING: 100.0 ROCKWELL B MAXIMUM OVERALL
•
THREAD LENGTH: 0.750 INCHES MINIMUM IN
•
WIDTH BETWEEN FLATS: 0.438 INCHES NOMINAL IN
•
HEAD STYLE: HEXAGON
•
SURFACE TREATMENT: CADMIUM OVERALL
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 10P STYLE AND 2 GRADE
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
MINIMUM YIELD STRENGTH55000 POUNDS PER SQUARE INCH LBS
HARDNESS RATING100.0 ROCKWELL B MAXIMUM OVERALL
THREAD LENGTH0.750 INCHES MINIMUM IN
WIDTH BETWEEN FLATS0.438 INCHES NOMINAL IN
HEAD STYLEHEXAGON
SURFACE TREATMENTCADMIUM OVERALL
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 10P STYLE AND 2 GRADE
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH20
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
180034Interchangeable
interchangeable cross-reference
interchangeable
AES01C250A50AWA91Interchangeable
interchangeable cross-reference
interchangeable
FFS85TYPE2STYLE10PGRADE5Interchangeable
interchangeable cross-reference
interchangeable
15AC46-47Interchangeable
interchangeable cross-reference
interchangeable
CP461-2XInterchangeable
interchangeable cross-reference
interchangeable
2185489Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 121926?
121926 is a SCREW,CAP,HEXAGON HEAD.
What parts can replace 121926?
There are 9 known substitutes for 121926: 180034, AES01C250A50AWA91, FFS85TYPE2STYLE10PGRADE5 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 121926?
121926 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-012-1926. 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