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Unit of Measure

Insert Type

N/A Solid

Series

N/A R1100

Material Type

N/A 4130 Steel

Material Specification

N/A AMS-S-6758

Heat Treat

N/A 125 KSI UTS min

Finish

N/A Cadmium Plate per AMS-QQ-P-416, Type II, Class 3
Lockring Rosan Part Number1 N/A RLRR31SA9

Internal Thread Lock

N/A No

A - Dia ±.005

N/A 0.358 in

B - External Thread

N/A 0.4375-14

B - External Thread - Major Diameter

N/A 0.4277-0.4375 in

B - External Thread - Pitch Diameter

N/A 0.3916-0.3941 in

B - External Thread - Minor Diameter

N/A 0.3411-0.3529 in

C ±.015

N/A 0.560 in

D ±.015

N/A 0.380 in

K - Dia

N/A 0.394-0.403 in

L ±.015

N/A 0.110 in

M - Dia ±.010

N/A 0.341 in
Aluminum Step Drill Part Number2 N/A RCDC31-368
Magnesium Step Drill Part Number3 N/A RCADC31-368
Basic Tap Size4 N/A 0.4375-14 UNC

Wrench Part Number

N/A R1107W

Lockring Drive Tool Part Number

N/A R1107D
Removal Drill Size5 N/A U

N/A

  • The external thread has a special pitch diameter and minor diameter which installs into a AS8879 class 3B, FED-STD-H28/2 class 3B, or National class 3 tapped hole.
  • 4130 Steel, 1117 Steel, 303 CRES, A286 CRES indicate standard materials.
  • 125 Microinch Ra for surface roughness per ANSI/ASME B46.1, except:
    - 250 Microinch Ra for serration
    - 100 Microinch Ra for cut threads
    - 63 Microinch Ra for ground or rolled threads.
  • When parent material surface is not flat or normal to axis of hole, provide A spotface for proper lockring entry.
  • Remove all burrs and sharp edges.

  • 1 Mating lockring is not included with insert. It must be ordered separately.
  • 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 and Removal drills are available for order.
  • 5 Taps and Removal drills are available for order.