385-20-8 — GEAR,HELICAL

✓ Government record, cited

— · NUT WASHER

PRODUCT OVERVIEW

385-20-8: GEAR,HELICAL.

The GEAR,HELICAL is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, body_style: WEBBED, OFFSET, SOLID, bore_style: W/ KEYWAY BOTH ENDS, teeth_type: SINGLE HELIX, tooth_form: STANDARD, helix_angle: 35.0833 DEGREES. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-188-0174, 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

385-20-8

NSN: 5315-00-188-0174
NIINs: 001880174, 003543553
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)

SPECIFICATIONS

material	STEEL OVERALL
body_style	WEBBED, OFFSET, SOLID
bore_style	W/ KEYWAY BOTH ENDS
teeth_type	SINGLE HELIX
tooth_form	STANDARD
helix_angle	35.0833 DEGREES
pitch_diameter	7.0590 INCHES MINIMUM AND 7.0600 INCHES MAXIMUM IN
pressure_angle	14.5000 DEGREES
teeth_quantity	52
hardness_rating	179.0 BRINELL TUNGSTEN CARBIDE MINIMUM AND 207.0 BRINELL TUNGSTEN CARBIDE MAXIMUM OVERALL
tooth_direction	RIGHT
special_features	DYNAMICALLY BALANCED 1/8 IN. OZ,2 PULLER HOLES 3/8-16 UNC 2B THD. ON A 3-3/8 IN. DIA,BOLT CIRCLE IN
NSN	5315-00-188-0174

COMPONENT DIAGRAM

KEY FEATURES

•

SURFACE FINISH: 63.0 MICROINCHES SHANK END

•

FIRST END LOCATION: BOTH ENDS

•

FIRST END STYLE: OVAL

•

MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL

•

PIN OVERALL LENGTH: 0.970 INCHES MINIMUM AND 1.030 INCHES MAXIMUM IN

•

SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL

•

PIN SIZE DESIGNATION: 2/0

•

MATERIAL: STEEL OVERALL

TECHNICAL CHARACTERISTICS

SURFACE FINISH	63.0 MICROINCHES SHANK END
FIRST END LOCATION	BOTH ENDS
FIRST END STYLE	OVAL
MATERIAL DOCUMENT AND CLASSIFICATION	66 FED STD SINGLE MATERIAL RESPONSE OVERALL
PIN OVERALL LENGTH	0.970 INCHES MINIMUM AND 1.030 INCHES MAXIMUM IN
SECOND END RELATIONSHIP WITH FIRST END	IDENTICAL
PIN SIZE DESIGNATION	2/0
MATERIAL	STEEL OVERALL
FIRST END OUTER RADIUS	0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN

SUBSTITUTES & CROSS-REFERENCES 7

NASM24692Reference document

Same NSN cross-reference

Reference document — Design control — primary reference

177010-21Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

MS24692-133Reference document

Same NSN cross-reference

Reference document — Secondary reference

111841Reference document

Same NSN cross-reference

Reference document — Secondary reference

12Z49PC36Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

51028Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusCancelled· U.S. Government catalog

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

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FREQUENTLY ASKED QUESTIONS

What is 385-20-8?

385-20-8 is a GEAR,HELICAL.

What parts can replace 385-20-8?

There are 7 known substitutes for 385-20-8: NASM24692, 177010-21, MS24692-133 and 4 more. Substitute compatibility should be verified for your specific system.

What is the NSN for 385-20-8?

385-20-8 is cataloged in the U.S. Government catalog under NSN 5315-00-188-0174. This indicates validated use in U.S. government and defense supply chains.

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