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ACCU-LOK® IIA blind fastener for composite application reduced protruding hex head CRES.
Unit of Measure

Dash Number (Grip)

N/A 950

Grip Range - Min. Grip

N/A 0.900 in

Grip Range - Max. Grip

N/A 0.950 in

Grip Range

N/A 0.900-0.950 in

A

N/A 0.250 in

B Min

N/A 0.272 in

D Dia

N/A 0.165 in

E Dia Max

N/A 0.164 in

F Wrench Flats

N/A 0.085 in

G Ref.

N/A 0.058 in

H

N/A 0.076 in

L Ref.

N/A 0.625 in

R Rad Max

N/A 0.030 in

T Across Hex. Ref.

N/A 0.375 in

Minimum available grip length

N/A -100

Recommended Hole Size

N/A 0.165-0.168

J Dia Min

N/A 0.250 in

K Max

N/A 0.370 in

Break off Limits <5>

N/A 0.020-0.095

Tensile Structural Failure (Min)

N/A 900 lb

Double Shear Min

N/A 3150 lb

Locking Torque Min

N/A 1.000 lb-in0.113 N-m

Material and Heat Treat

N/A Nut: A-286 stainless steel per chemical requirements of AMS 5732; heat treated as required for performance.
Corebolt: A-286 per AMS 5731, AMS 5732 or AMS 5737; Heat treated to 175 ksi tensile min.
Sleeve: 304 stainless steel per AMS 5639; heat treated as required for performance.
Insert: Acetal per ASTM D4181
DryvcapTM: Mild steel.

Finish

N/A Nut, Sleeve & Corebolt: Passivate per AMS-QQ-P-35. KAL-GARD ANN-RO #1013 conversion coating optional.
Insert: None
DryvcapTM: Color brown.

Lubricants

N/A The following lubricants may be applied to any or all components in any combination as required for performance unless otherwise specified: Dry film lube per AS5272, Type I, everlube #812, paraffin wax, or cetyl alcohol per MIL-L-87132.

Applicable Specification

N/A Procurement specification: FCBF208
Special lube and finish: FCBF202

Material Type

N/A A286 CRES

Rated Shear Strength

N/A 75 KSI

Headstyle

N/A Hex Protruding

Notes

N/A 2.Locking feature consists of three (3) indentations located 120° apart on the periphery of the nut component and approximately .040" above intersection of the nut nose angle and O.D.
3.Composite blind fastener with selected combinations of the above lubrications and finishes are specially coded and may be substituted for equivalent non-coded parts at manufacturer´s option. Contact Fairchild Engineering.
4. These parts are similar to FCBF2121 except as follows:
A. Improved out-of-grip flagging capacity (corebolt B/O)
B. Increased blind side protrusion before and after upset
C. Increased installed weight
<5> An "L" in place of the dash (-) between the diameter dash number and the grip dash number designates modified break-off limits of +.053/-.050. "EX: FCBF3009( )-6L200".
<6>Distortion shall not prevent insertion of the fastener into a ring gauge of length equal to one diameter and hole diameter equal to minimum recommended hole size. Insertion force shall not exceed 5.0 lbs.