B8A-120 — GEAR,SPUR

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

B8A-120: GEAR,SPUR.

The GEAR,SPUR is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, body_style: PLAIN, SOLIDPLAIN, SOLID, bore_style: PLAIN BOTH ENDSPLAIN BOTH ENDS, tooth_form: STANDARDSTANDARD, pitch_diameter: 1.0000 INCHES NOMINAL1.0000 INCHES NOMINAL IN, pressure_angle: 20.0000 DEGREES20.0000 DEGREES. This part is cataloged in the U.S.

Government catalog under NSN 3020-01-135-0304, 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

B8A-120

NSN: 3020-01-135-0304
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
CAGE: 00328 — DESIGNATRONICS INCORPORATED DIV STERLING INSTRUMENTS DIV (USA)

SPECIFICATIONS

material	ALUMINUM ALLOY 2024 OVERALL
body_style	PLAIN, SOLIDPLAIN, SOLID
bore_style	PLAIN BOTH ENDSPLAIN BOTH ENDS
tooth_form	STANDARDSTANDARD
pitch_diameter	1.0000 INCHES NOMINAL1.0000 INCHES NOMINAL IN
pressure_angle	20.0000 DEGREES20.0000 DEGREES
teeth_quantity	120120
style_designator	PROTRUDING HUBPROTRUDING HUB
surface_treatment	ANODIZE OVERALLANODIZE OVERALL
face_nominal_width	0.062 INCHES0.062 INCHES IN
hub_nominal_diameter	0.312 INCHES FIRST END0.312 INCHES FIRST END IN
hub_style_designator	PINNED FIRST ENDPINNED FIRST END
NSN	3020-01-135-0304

COMPONENT DIAGRAM

KEY FEATURES

•

BORE NOMINAL DIAMETER: 0.125 INCHES BOTH ENDS0.125 INCHES BOTH ENDS IN

•

HUB NOMINAL DIAMETER: 0.312 INCHES FIRST END0.312 INCHES FIRST END IN

•

TEETH QUANTITY: 120120

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALLMIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL

•

BODY STYLE: PLAIN, SOLIDPLAIN, SOLID

•

BORE STYLE: PLAIN BOTH ENDSPLAIN BOTH ENDS

•

NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END: 0.188 INCHES FIRST END0.188 INCHES FIRST END IN

•

STYLE DESIGNATOR: PROTRUDING HUBPROTRUDING HUB

TECHNICAL CHARACTERISTICS

BORE NOMINAL DIAMETER	0.125 INCHES BOTH ENDS0.125 INCHES BOTH ENDS IN
HUB NOMINAL DIAMETER	0.312 INCHES FIRST END0.312 INCHES FIRST END IN
TEETH QUANTITY	120120
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALLMIL-A-8625,TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
BODY STYLE	PLAIN, SOLIDPLAIN, SOLID
BORE STYLE	PLAIN BOTH ENDSPLAIN BOTH ENDS
NOMINAL DISTANCE BETWEEN BODY FACE AND PROTRUDING HUB END	0.188 INCHES FIRST END0.188 INCHES FIRST END IN
STYLE DESIGNATOR	PROTRUDING HUBPROTRUDING HUB
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALLQQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
PITCH DIAMETER	1.0000 INCHES NOMINAL1.0000 INCHES NOMINAL IN

OTHER ITEMS IN FSC 3020 — Gears, Pulleys, Sprockets, and Transmission Chain

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

3020-00-000-0091 3020-00-001-0027 3020-00-001-0028 3020-00-001-0063 3020-00-001-0064 3020-00-001-0066 3020-00-001-0071 3020-00-001-0072

SUBSTITUTES & CROSS-REFERENCES 1

P120A5-120Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is B8A-120?

B8A-120 is a GEAR,SPUR.

What parts can replace B8A-120?

There is 1 known substitute for B8A-120: P120A5-120. Substitute compatibility should be verified for your specific system.

What is the NSN for B8A-120?

B8A-120 is cataloged in the U.S. Government catalog under NSN 3020-01-135-0304. This indicates validated use in U.S. government and defense supply chains.

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B8A-120 — GEAR,SPUR

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