B831-7120-13 — SHAFT,SHOULDERED

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

B831-7120-13: SHAFT,SHOULDERED.

The SHAFT,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, end_similarity: NOT IDENTICAL, overall_length: 11.130 INCHES NOMINAL IN, surface_finish: 16.0 MICROINCHES, first_end_style: EXTERNALLY THREADED AND FLAT KEYWAY, second_end_style: PLAIN. This part is cataloged in the U.S.

Government catalog under NSN 3040-01-503-4577, 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

B831-7120-13

NSN: 3040-01-503-4577
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)

SPECIFICATIONS

material	STEEL CORROSION RESISTING
step_quantity	6
end_similarity	NOT IDENTICAL
overall_length	11.130 INCHES NOMINAL IN
surface_finish	16.0 MICROINCHES
first_end_style	EXTERNALLY THREADED AND FLAT KEYWAY
second_end_style	PLAIN
special_features	LARGE END HAS INTERNAL SPINE SHAFT.
first_end_diameter	0.7500 INCHES NOMINAL IN
second_end_diameter	1.7500 INCHES NOMINAL IN
largest_step_diameter	3.000 INCHES NOMINAL IN
external_keyway_length	1.380 INCHES NOMINAL FIRST END IN
NSN	3040-01-503-4577

COMPONENT DIAGRAM

KEY FEATURES

•

SURFACE FINISH: 16.0 MICROINCHES

•

STEP QUANTITY: 6

•

FIRST END DIAMETER: 0.7500 INCHES NOMINAL IN

•

SECOND END DIAMETER: 1.7500 INCHES NOMINAL IN

•

LARGEST STEP DIAMETER: 3.000 INCHES NOMINAL IN

•

FIRST END EXTERNAL THREAD LENGTH: 1.930 INCHES NOMINAL IN

•

FIRST END STYLE: EXTERNALLY THREADED AND FLAT KEYWAY

•

MATERIAL DOCUMENT AND CLASSIFICATION: ASTM-A564, TY-630, COND-H1100 NATIONAL SPEC SINGLE MATERIAL RESPONSE AND ASTM-A484 NATIONAL SPEC SINGLE MATERIAL RESPONSE

TECHNICAL CHARACTERISTICS

SURFACE FINISH	16.0 MICROINCHES
STEP QUANTITY	6
FIRST END DIAMETER	0.7500 INCHES NOMINAL IN
SECOND END DIAMETER	1.7500 INCHES NOMINAL IN
LARGEST STEP DIAMETER	3.000 INCHES NOMINAL IN
FIRST END EXTERNAL THREAD LENGTH	1.930 INCHES NOMINAL IN
FIRST END STYLE	EXTERNALLY THREADED AND FLAT KEYWAY
MATERIAL DOCUMENT AND CLASSIFICATION	ASTM-A564, TY-630, COND-H1100 NATIONAL SPEC SINGLE MATERIAL RESPONSE AND ASTM-A484 NATIONAL SPEC SINGLE MATERIAL RESPONSE
OVERALL LENGTH	11.130 INCHES NOMINAL IN
FIRST END KEYWAY DEPTH	0.095 INCHES NOMINAL IN

OTHER ITEMS IN FSC 3040 — Miscellaneous Power Transmission Equipment

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

3040-00-001-0046 3040-00-001-0047 3040-00-001-0048 3040-00-001-0068 3040-00-001-0077 3040-00-001-0078 3040-00-001-0089 3040-00-001-1224

SUBSTITUTES & CROSS-REFERENCES 1

7409754Reference document

Same NSN cross-reference

Reference document — Drawing number 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 B831-7120-13?

B831-7120-13 is a SHAFT,SHOULDERED.

What parts can replace B831-7120-13?

There is 1 known substitute for B831-7120-13: 7409754. Substitute compatibility should be verified for your specific system.

What is the NSN for B831-7120-13?

B831-7120-13 is cataloged in the U.S. Government catalog under NSN 3040-01-503-4577. This indicates validated use in U.S. government and defense supply chains.

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