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

Dash Number (Grip)

N/A 250

Grip Range - Min. Grip

N/A 0.200 in

Grip Range - Max. Grip

N/A 0.250 in

Grip Range

N/A 0.200-0.250 in

A

N/A 0.500 in

B Min

N/A 0.548 in

D Dia

N/A 0.375 in

E Dia Max

N/A 0.374 in

F Wrench Flats

N/A 0.185 in

H

N/A 0.133 in

R Rad Max

N/A 0.040 in

T Across Hex. Ref.

N/A 0.500 in

Minimum available grip length

N/A -150

Recommended Hole Size

N/A 0.375-0.378

J Dia Min

N/A 0.575 in

Break off Limits <3><6>

N/A 0.050-0.053

Tensile Structural Failure (Min)

N/A 5000 lb

Double Shear Min

N/A 16450 lb

Locking Torque Min

N/A 4.000 lb-in0.452 N-m

Material and Heat Treat

N/A Nut: 6AL-4V titanium per AMS 4928 or AMS 4967. Heat treated per MIL-H-81200 to 95 ksi shear strength minimum, maximum hydrogen 125 ppm.
Corebolt: A-286 per AMS 5731, AMS 5732 or AMS 5737; Heat treated to 175 ksi tensil 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: KAL-GARD ANN-RO #1012 conversion coating or phosphate flouride per AMS 2486 may be used at manufacturer´s option.
Sleeve & Corebolt: Passivate per AMS-QQ-P-35. KAL-GARD ANN-RO #1013 conversion coating optional.
Insert: None
Dryvcap

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: FCBF200
Special lube and finish: FCBF202

Material Type

N/A Titanium

Rated Shear Strength

N/A 75 KSI

Headstyle

N/A 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.
<4> Alternate markings: "VS" and "2011"
5.Composite blind fasteners with selected combinations of the above lubrications and finishes are specially coded and may be substituted for equivalent of non-coded parts at manufacrure´s option. Contact Fairchild Engineering.
5. An "L" in place of the dash (-) between the diameter dash number and the grip dash number designates midified break-off limits of +.053/-.050. (e.g. FCBF2211( )-6L200).
<7>Distortion shall not prevent insertion of the fastener into a ring gauge of length equal to one diameter and hole diameter equal to a minimum recommended hole. Insertion force shall not exceed 5.0 lbs.
8. These parts are similar to FCBF2111 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