11EK51 — BOLT,SHOULDER

✓ Government record, cited

— · BOLT SCREW

PRODUCT OVERVIEW

11EK51: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1038 OVERALL, head_style: HEXAGON, head_height: 0.300 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 4.108 INCHES NOMINAL IN, shoulder_shape: ROUND FIRST SHOULDER. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-156-6394, 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

11EK51

NSN: 5306-01-156-6394
FSC: 5306 — Bolts
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)

SPECIFICATIONS

material	STEEL COMP 1038 OVERALL
head_style	HEXAGON
head_height	0.300 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
thread_class	2A A
thread_length	4.108 INCHES NOMINAL IN
shoulder_shape	ROUND FIRST SHOULDER
fastener_length	10.450 INCHES MINIMUM AND 10.630 INCHES MAXIMUM IN
shoulder_length	6.277 INCHES MINIMUM AND 6.287 INCHES MAXIMUM FIRST SHOULDER IN
special_features	UNDERCUT BETWEEN SHOULDER AND THREADS HAS LENGTH OF 0.120 IN. MAX,AND DIA OF 0.348 IN.; CHAMFER POINT LENGTH IS 0.090 IN. MIN AND 0.150 IN. MAX IN
thread_direction	RIGHT-HAND
shoulder_diameter	0.555 INCHES MINIMUM AND 0.563 INCHES MAXIMUM FIRST SHOULDER IN
surface_treatment	ZINC OVERALL
NSN	5306-01-156-6394

COMPONENT DIAGRAM

KEY FEATURES

•

HEAD HEIGHT: 0.300 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN

•

FASTENER LENGTH: 10.450 INCHES MINIMUM AND 10.630 INCHES MAXIMUM IN

•

SHOULDER LENGTH: 6.277 INCHES MINIMUM AND 6.287 INCHES MAXIMUM FIRST SHOULDER IN

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: BW-162A-P,FSCM 06853 MFR REF SINGLE TREATMENT RESPONSE OVERALL A

•

SHOULDER DIAMETER: 0.555 INCHES MINIMUM AND 0.563 INCHES MAXIMUM FIRST SHOULDER IN

•

THREAD LENGTH: 4.108 INCHES NOMINAL IN

•

SHOULDER SHAPE: ROUND FIRST SHOULDER

•

MATERIAL DOCUMENT AND CLASSIFICATION: ASAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL

TECHNICAL CHARACTERISTICS

HEAD HEIGHT	0.300 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
FASTENER LENGTH	10.450 INCHES MINIMUM AND 10.630 INCHES MAXIMUM IN
SHOULDER LENGTH	6.277 INCHES MINIMUM AND 6.287 INCHES MAXIMUM FIRST SHOULDER IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	BW-162A-P,FSCM 06853 MFR REF SINGLE TREATMENT RESPONSE OVERALL A
SHOULDER DIAMETER	0.555 INCHES MINIMUM AND 0.563 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH	4.108 INCHES NOMINAL IN
SHOULDER SHAPE	ROUND FIRST SHOULDER
MATERIAL DOCUMENT AND CLASSIFICATION	ASAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER	0.438 INCHES IN
HEAD STYLE	HEXAGON

SUBSTITUTES & CROSS-REFERENCES 1

290921Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 11EK51?

11EK51 is a BOLT,SHOULDER.

What parts can replace 11EK51?

There is 1 known substitute for 11EK51: 290921. Substitute compatibility should be verified for your specific system.

What is the NSN for 11EK51?

11EK51 is cataloged in the U.S. Government catalog under NSN 5306-01-156-6394. This indicates validated use in U.S. government and defense supply chains.

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