Item # SFR5902A646D30, Stud - Locked In, Ring Locked, Serrated, High Strength, Oversize Replacement On Howmet Aerospace

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Unit of Measure

Series	N/A SFR5902( )( )(D)L(R)
Material Specification	N/A MIL-S-6049
Material	N/A 8740 Alloy Steel per MIL-S-6049
Heat Treat	N/A 160 - 180 KSI UTS
Finish	N/A Cadmium plate per QQ-P-416, Type II, Class 3
Nut End Type	N/A Drilled
A Nut End Thread Size	N/A 0.4375-20 UNJF-3A
Stud End type	N/A No Recess
B Stud End Thread Size	N/A 0.7500-16 UNJF-3B
B Stud End Thread-Pitch Diameter	N/A 0.7134-0.7114 in
B Stud End Thread-Minor Diameter	N/A 0.6773-0.6656 in
C ±.010	N/A 0.948 in
D - Dia	N/A 0.437-0.433 in
E - Dia +.005 -.004	N/A 0.567 in
F - Dia +.007 -.002	N/A 0.601 in
G - Dia +.000 -.015	N/A 0.665 in
H - Dia Min	N/A 0.535 in
J	N/A 26.000
K +2 -1	N/A 111.000 º
T ±.015	N/A 0.812 in
V	N/A 0.200 Inch
P - Dia ±.010	N/A 0.354 in
S ±.015	N/A 0.170 in
U - Dia +.005 -.002	N/A 0.096 in
L ±.015	N/A 1.875 in
Lockring - Carbon Steel	N/A RLRR1997-107
Lockring - A-286 Cres	N/A RLRR1997E107
Grip Length	N/A 1.063 in
Shank Length	N/A 0.219 in

Step Drill Part Number	N/A SDC750JF
Drive Wrench Number	N/A R1110W
Lockring Drive Tool Part Number	N/A SFR5902-7D

Notes

N/A

<1>The studend thread has a special pitch dia and minor dia which installs into a MIL-S-8879 tapped hole.
Surface Roughness: Machined surfaces to be 125microinches in accordance with ANSI B46.1 except serrated collar.
<3>Maximum 2 incomplete threads
Lockring RLRR1997-() series is 1117 Carbon Steel (ASTM A108), 36-45 HRC, Cad plated per QQ-P-416, TY II, Cl3.
Lockring RLRR1997E() series is A-286 Cres (AMS5731 or AMS6734), 269 HB Min, Passivated per QQ-P-35.
Fillets: R .030 Maximum
Edges: Edges broken .003-.015

Axis of hole to be normal to entry surface or provide spotface whenrequired.
Install insert to depth shown.
Drive lockring to depth shown.
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.
These studs are primarily designed for use in soft materials (alum, mag, etc). For use in harder materials, cotact us.