20X1254 — BOLT,RIBBED SHOULDER

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

20X1254: BOLT,RIBBED SHOULDER.

The BOLT,RIBBED SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT CHAMFER, rib_length: 0.500 INCHES NOMINAL IN, head_height: 0.312 INCHES MINIMUM AND 0.402 INCHES MAXIMUM IN, head_diameter: 1.375 INCHES NOMINAL IN, thread_length: 0.906 INCHES MINIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-448-4000, 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

20X1254

NSN: 5306-00-448-4000
FSC: 5306 — Bolts
CAGE: 78500 — MERITOR HEAVY VEHICLE SYSTEMS, LLC (USA)

SPECIFICATIONS

material	STEEL OVERALL
head_style	FLAT CHAMFER
rib_length	0.500 INCHES NOMINAL IN
head_height	0.312 INCHES MINIMUM AND 0.402 INCHES MAXIMUM IN
head_diameter	1.375 INCHES NOMINAL IN
thread_length	0.906 INCHES MINIMUM IN
shoulder_shape	ROUND FIRST SHOULDER
fastener_length	3.375 INCHES NOMINAL IN
thread_direction	RIGHT-HAND
rib_major_diameter	0.810 INCHES MINIMUM AND 0.820 INCHES MAXIMUM IN
nominal_thread_diameter	0.750 INCHES IN
thread_quantity_per_inch	16
NSN	5306-00-448-4000

COMPONENT DIAGRAM

KEY FEATURES

•

HEAD HEIGHT: 0.312 INCHES MINIMUM AND 0.402 INCHES MAXIMUM IN

•

FASTENER LENGTH: 3.375 INCHES NOMINAL IN

•

DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS: 0.562 INCHES NOMINAL IN

•

THREAD LENGTH: 0.906 INCHES MINIMUM IN

•

SHOULDER SHAPE: ROUND FIRST SHOULDER

•

MATERIAL DOCUMENT AND CLASSIFICATION: T AND A DIV B14 GRADE 8 78500 MFR REF SINGLE MATERIAL RESPONSE OVERALL

•

RIB LENGTH: 0.500 INCHES NOMINAL IN

•

NOMINAL THREAD DIAMETER: 0.750 INCHES IN

TECHNICAL CHARACTERISTICS

HEAD HEIGHT	0.312 INCHES MINIMUM AND 0.402 INCHES MAXIMUM IN
FASTENER LENGTH	3.375 INCHES NOMINAL IN
DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS	0.562 INCHES NOMINAL IN
THREAD LENGTH	0.906 INCHES MINIMUM IN
SHOULDER SHAPE	ROUND FIRST SHOULDER
MATERIAL DOCUMENT AND CLASSIFICATION	T AND A DIV B14 GRADE 8 78500 MFR REF SINGLE MATERIAL RESPONSE OVERALL
RIB LENGTH	0.500 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER	0.750 INCHES IN
HEAD STYLE	FLAT CHAMFER
THREAD DIRECTION	RIGHT-HAND

OTHER ITEMS IN FSC 5306 — Bolts

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017

SUBSTITUTES & CROSS-REFERENCES 1

5306004484000Reference document

Same NSN cross-reference

Reference document — Informative reference only

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 20X1254?

20X1254 is a BOLT,RIBBED SHOULDER.

What parts can replace 20X1254?

There is 1 known substitute for 20X1254: 5306004484000. Substitute compatibility should be verified for your specific system.

What is the NSN for 20X1254?

20X1254 is cataloged in the U.S. Government catalog under NSN 5306-00-448-4000. This indicates validated use in U.S. government and defense supply chains.

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20X1254 — BOLT,RIBBED SHOULDER

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