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ACCU-LOK® II blind fastener for composite application reduced protruding hex head A-286 CRES.
Unit of Measure

Dash Number (Grip)

N/A 1650

Grip Range - Min. Grip

N/A 1.600 in

Grip Range - Max. Grip

N/A 1.650 in

Grip Range

N/A 1.600-1.650 in

A

N/A 0.500 in

B Min

N/A 0.548

D Dia

N/A 0.375 in

E Dia Max

N/A 0.374 in

F Wrench Flats

N/A 0.185 in

G Ref.

N/A 0.080 in

H

N/A 0.133 in

L Ref.

N/A 1.090 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

K Max

N/A 0.625 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: A-286 per chemical requirements of AMS 5731, AMS 5732, AMS 5734 and AMS 5737. Heat treated as required for performance.
Screw: A-286 per the chemical requirements of AMS 5731, AMS 5732, AMS 5734 and AMS 5737. Heat treated as required for performance.
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 & Screw: Passivate per AMS-QQ-P-35. KAL-GARD ANN-RO #1013 conversion coating optional.
Insert: None
DryvcapTM: Corrosion resistant coating, color black.

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 1.Procurement specification: FCBF200
2.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.
5.Composite blind fasteners with selected combinations of the above lubrications and finishes are specially coded and may be substituted for equivalent 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. FCBF2121( )-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. Insertion force shall not exceed 5.0 lbs.