3/8-16 Tripod Reducer Bushing (Tripod Thread Adapter), ISO 1222

The 3/8-16 tripod reducer bushing (ISO 1222): pitch 1.588 mm, nut major diameter 9.525 mm, nut pitch diameter 8.494 mm. Available as simplified STEP files.

How these parts are made, and what the levels mean: read the method

• Also searched as: 3/8-16 reducer bushing
• Model id: iso1222-b-3-8-16
• Standard: ISO 1222:2010 · size 3/8-16

Files

Part key	Simplified
iso1222-b-3-8-16	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
P	Pitch		1.588		1.588	nominal	L2
D	Nut major diameter	9.675	9.525		9.525	nominal	L2
D2	Nut pitch diameter	8.644	8.494	8.86	8.752	midpoint of min–max	L2
D1	Nut minor diameter		7.806	8.163	7.806	nominal	L2
d	Bolt major diameter	9.132	9.525	9.492	9.312	midpoint of min–max	L2
d2	Bolt pitch diameter	8.295	8.494	8.461	8.378	midpoint of min–max	L2
d1	Bolt minor diameter		7.806	7.544	7.806	nominal	L2
dr	Bearing face recess diameter			20	20	single limit (max), modeled at the limit	L2
l	Bolt protrusion		4.5		4.5	nominal	L0 (nom: one source)
b	Bolt thread length from the end	3.5			3.5	single limit (min), modeled at the limit	L0 (min: one source)
z	Bolt end chamfer length			1.3	1.3	single limit (max), modeled at the limit	L0 (max: one source)
t	Nut full-thread depth	4			4	single limit (min), modeled at the limit	L0 (min: one source)
h	Nut hole depth	5.5			5.5	single limit (min), modeled at the limit	L0 (min: one source)
e	Nut mouth countersink depth			1	1	single limit (max), modeled at the limit	L0 (max: one source)

Drawing

As a PDF: CC-ISO1222B-SZ-3-8-16.pdf.

Documents

• CC-ISO1222B-DS-3-8-16.pdf: 3/8-16 datasheet: values with levels, sources
• CC-ISO1222B-SZ-3-8-16.pdf: 3/8-16 drawing: this size's values on the views
• parts.json: the part record of this size (the platform contract)

Sources

iso1222-2010-sample, iso1222-2010-sample-figures. Full citations: the method page and this size's datasheet.

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