Item # RJ1206SM10, RJ1200 Inserts - Ring Locked, Blind, Fine Internal and External Coarse Threads On Howmet Aerospace

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Catalog > Inserts and Studs > Ring Locked Inserts & Studs > Ring Locked Inserts > RJ1200 Inserts - Ring Locked, Blind, Fine Internal and External Coarse Threads > Item # RJ1206SM10

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Unit of Measure

Insert Type	N/A Blind
Series	N/A RJ1200
Material Type	N/A 303 CRES
Material Specification	N/A AMS-A582 or AMS 5640
Heat Treat	N/A None
Finish	N/A Passivate per AMS2700
Lockring Rosan Part Number	N/A RLRR28SA8
Lockring Military Part Number	N/A MS51990-106P
Internal Thread Lock	N/A No
A - Internal Thread, Class 3B¹	N/A 0.2500-28 UNJF
B - External Thread	N/A 0.3750-16
B - External Thread - Pitch Diameter	N/A 0.3347-0.3372 in
B - External Thread - Minor Diameter	N/A 0.2906-0.3011 in
C - Length ±.015	N/A 0.620 in
D ±.015	N/A 0.450 in
E - Min. Full Thread Depth	N/A 0.380 in

Aluminum Step Drill Part Number²	N/A RCDC28-312S
Magnesium Step Drill Part Number³	N/A RCADC28-312S
Basic Tap Size⁴	N/A 0.3750-16 UNC
Wrench Part Number	N/A R1106W
Lockring Drive Tool Part Number	N/A R206D
Removal Drill Size⁵	N/A 5/16

N/A

The external thread has a special pitch diameter and minor diameter which installs into an AS8879 Class 3B, MIL-S-7742 Class 3B, or National Class 3 tapped hole.
Mating lockring is not included with insert, it must be ordered separately.
Unless otherwise specified dimensions are in inches & ASME Y14.5M.

¹ AS8879 Internal Thread
² Step drills are designed for thru hole drilling. When used to drill a blind hole, it may be necessary to grind the drill to suit the depth required.
³ Step drills are designed for thru hole drilling. When used to drill a blind hole, it may be necessary to grind the drill to suit the depth required.
⁴ Taps are not supplied by Howmet.
⁵ Removal drills are not supplied by Howmet.