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SkyLoc® Structural Fasteners
QL4-21 THUMBNAIL
EXT Nut Assembly
$21.70 - $24.11 Price Details
Alternate Part Number 1: CA21021
Alternate Part Number 2: 5310-01-054-0840
EXT Grommet - Passivated - L 0.115 Grip 0.075-0.095
$11.42 - $14.45 Price Details
Alternate Part Number 1: CA21038-4-1
Alternate Part Number 2: 5325-01-444-3534
EXT Grommet - Cadmium Plated - L 0.115 Grip 0.075-0.095
$11.85 - $15.00 Price Details
Alternate Part Number 1: CA21038C-4-1
Alternate Part Number 2: 5325-01-053-9889
EXT Grommet - Passivated - L 0.135 Grip 0.096-0.115
$11.82 - $14.96 Price Details
Alternate Part Number 1: CA21038-4-2
Alternate Part Number 2: 5325-01-317-7436
EXT Grommet - Cadmium Plated - L 0.135 Grip 0.096-0.115
$12.63 - $15.99 Price Details
Alternate Part Number 1: CA21038C-4-2
Alternate Part Number 2: 5325-01-145-7575
EXT Grommet - Passivated - L 0.155 Grip 0.116-0.135
$12.42 - $15.73 Price Details
Alternate Part Number 1: CA21038-4-3
Alternate Part Number 2: 5325-01-298-9760
EXT Grommet - Cadmium Plated - L 0.155 Grip 0.116-0.135
$13.50 - $17.09 Price Details
Alternate Part Number 1: CA21038C-4-3
Alternate Part Number 2: 5325-01-099-5006
QL4S-EXT10 THUMBNAIL
2-Lead Structural Stud - L=1.337 Grip 0.711-0.850
$31.01 - $39.25 Price Details
Alternate Part Number 1: CA21037-4-10HS
Alternate Part Number 2: 5306-01-413-5987
QL4S-EXT2 THUMBNAIL
2-Lead Structural Stud - L=0.777 Grip 0.180-0.290
$17.23 - $21.81 Price Details
QL4S-EXT4 THUMBNAIL
2-Lead Structural Stud - L=0.917 Grip 0.291-0.430
$17.23 - $21.81 Price Details
Alternate Part Number 1: CA21037-4-4HS
Alternate Part Number 2: 5306-01-056-6522
QL4S-EXT6 THUMBNAIL
2-Lead Structural Stud - L=1.057 Grip 0.431-0.570
$27.02 - $34.20 Price Details
Alternate Part Number 1: CA21037-4-6HS
Alternate Part Number 2: 5306-01-051-9622
QL4S-EXT8 THUMBNAIL
2-Lead Structural Stud - L=1.197 Grip 0.571-0.710
$29.32 - $37.11 Price Details
Alternate Part Number 1: CA21037-4-8HS
Alternate Part Number 2: 5306-01-051-3467
QL4S-RET1 THUMBNAIL
External Thread (EXT) Retaining Ring - 17-7PH Passivated
$3.93 - $4.98 Price Details
Alternate Part Number 1: CA21037-4R
Alternate Part Number 2: 5310-01-280-5784
QL4S-RET2 THUMBNAIL
External Thread (EXT) Retaining Ring - Cadmium Plated Type II, Class 2
$4.28 - $5.41 Price Details
Alternate Part Number 1: CA21037-4R
Alternate Part Number 2: 5310-01-280-5784
QL8C10 THUMBNAIL
Caged Floating Receptacle Assembly
$52.34 - $66.25 Price Details
Alternate Part Number 1: CA1810
Alternate Part Number 2: 5325-00-925-6399
QL8C20-0FH THUMBNAIL
L=.375 Grip .095-.155
$13.83 - $17.50 Price Details
Alternate Part Number 1: CA1820-0
QL8C20-10FH THUMBNAIL
L=1.281 Grip 1.001-1.093
$25.10 - $32.18 Price Details
Alternate Part Number 1: CA1820-10
QL8C20-11FH THUMBNAIL
L=1.375 Grip 1.094-1.187
$25.10 - $32.18 Price Details
Alternate Part Number 1: CA1820-11
QL8C20-12FH THUMBNAIL
L=1.468 Grip 1.188-1.281
$25.10 - $32.18 Price Details
Alternate Part Number 1: CA1820-12
QL8C20-13FH THUMBNAIL
L=1.562 Grip 1.282-1.375
$29.82 - $38.23 Price Details
Alternate Part Number 1: CA1820-13
QL8C20-14FH THUMBNAIL
L=1.656 Grip 1.376-1.468
$29.82 - $38.23 Price Details
Alternate Part Number 1: CA1820-14
QL8C20-15FH THUMBNAIL
L=1.750 Grip 1.469-1.562
$29.82 - $38.23 Price Details
Alternate Part Number 1: CA1820-15
QL8C20-16FH THUMBNAIL
L=1.843 Grip 1.563-1.656
$29.82 - $38.23 Price Details
Alternate Part Number 1: CA1820-16
QL8C20-17FH THUMBNAIL
L=1.936 Grip 1.657-1.750
$29.82 - $38.23 Price Details
Alternate Part Number 1: CA1820-17
QL8C20-18FH THUMBNAIL
L=2.032 Grip 1.751-1.843
$29.82 - $38.23 Price Details
Alternate Part Number 1: CA1820-18
QL8C20-1FH THUMBNAIL
L=.437 Grip .156-.250
$13.83 - $17.50 Price Details
Alternate Part Number 1: CA1820-1
QL8C20-2FH THUMBNAIL
L=.531 Grip .251-.343
$10.73 - $13.59 Price Details
Alternate Part Number 1: CA1820-2
QL8C20-3FH THUMBNAIL
L=.625 Grip .344-.437
$10.73 - $13.59 Price Details
Alternate Part Number 1: CA1820-3
QL8C20-4FH THUMBNAIL
L=.718 Grip .438-.531
$13.95 - $17.66 Price Details
Alternate Part Number 1: CA1820-4
QL8C20-5FH THUMBNAIL
L=.812 Grip .532-.625
$13.95 - $17.66 Price Details
Alternate Part Number 1: CA1820-5
QL8C20-6FH THUMBNAIL
L=.906 Grip .626-.718
$13.95 - $17.66 Price Details
Alternate Part Number 1: CA1820-6
QL8C20-7FH THUMBNAIL
L=1.000 Grip .719-.812
$13.95 - $17.66 Price Details
Alternate Part Number 1: CA1820-7
QL8C20-8FH THUMBNAIL
L=1.093 Grip .813-.906
$25.10 - $32.18 Price Details
Alternate Part Number 1: CA1820-8
QL8C20-9FH THUMBNAIL
L=1.187 Grip .907-.1000
$25.10 - $32.18 Price Details
Alternate Part Number 1: CA1820-9
QL8C21-0PHS THUMBNAIL
L=.375 Grip .095-.155
$14.63 - $18.75 Price Details
Alternate Part Number 1: CA1821-0
QL8C21-10PHS THUMBNAIL
L=1.281 Grip 1.001-1.093
$31.75 - $40.70 Price Details
Alternate Part Number 1: CA1821-10
QL8C21-11PHS THUMBNAIL
L=1.375 Grip 1.094-1.187
$31.75 - $40.70 Price Details
Alternate Part Number 1: CA1821-11
QL8C21-12PHS THUMBNAIL
L=1.468 Grip 1.188-1.281
$31.75 - $40.70 Price Details
Alternate Part Number 1: CA1821-12
QL8C21-13PHS THUMBNAIL
L=1.562 Grip 1.282-1.375
$37.72 - $48.35 Price Details
Alternate Part Number 1: CA1821-13
QL8C21-14PHS THUMBNAIL
L=1.656 Grip 1.376-1.468
$37.72 - $48.35 Price Details
Alternate Part Number 1: CA1821-14
QL8C21-15PHS THUMBNAIL
L=1.750 Grip 1.469-1.562
$37.72 - $48.35 Price Details
Alternate Part Number 1: CA1821-15
QL8C21-16PHS THUMBNAIL
L=1.843 Grip 1.563-1.656
$37.72 - $48.35 Price Details
Alternate Part Number 1: CA1821-16
QL8C21-17PHS THUMBNAIL
L=1.936 Grip 1.657-1.750
$37.72 - $48.35 Price Details
Alternate Part Number 1: CA1821-17
QL8C21-18PHS THUMBNAIL
L=2.032 Grip 1.751-1.843
$37.72 - $48.35 Price Details
Alternate Part Number 1: CA1821-18
QL8C21-1PHS THUMBNAIL
L=.437 Grip .156-.250
$14.63 - $18.75 Price Details
Alternate Part Number 1: CA1821-1
QL8C21-2PHS THUMBNAIL
L=.531 Grip .251-.343
$12.71 - $16.30 Price Details
Alternate Part Number 1: CA1821-2
QL8C21-3PHS THUMBNAIL
L=.625 Grip .344-.437
$12.71 - $16.30 Price Details
Alternate Part Number 1: CA1821-3
QL8C21-4PHS THUMBNAIL
L=.718 Grip .438-.531
$15.06 - $19.31 Price Details
Alternate Part Number 1: CA1821-4
QL8C21-5PHS THUMBNAIL
L=.812 Grip .532-.625
$15.06 - $19.31 Price Details
Alternate Part Number 1: CA1821-5
QL8C21-6PHS THUMBNAIL
L=.906 Grip .626-.718
$15.06 - $19.31 Price Details
Alternate Part Number 1: CA1821-6
 Page of 3  >   >>
 

SkyLoc® QL™ Series — Structural Panel Fasteners for High-Load, High-Vibration Environments

The SkyLoc® QL™ Series represents Skybolt's next-generation structural fastening solution, engineered for applications where removable panels must carry significant shear and tensile loads while resisting vibration, fatigue, and repeated service cycles.

Designed for aerospace, defense, motorsport, and advanced industrial applications, SkyLoc® fasteners deliver structural load capacity with rapid installation and removal—reducing maintenance time without compromising strength or durability.

⚡ Key Features

  • High shear and tensile load capability
  • Positive locking under severe vibration
  • Tool-controlled installation and removal
  • Consistent clamp load across wide grip ranges
  • Long service life with high cycle performance
  • Radial float receptacles accommodate misalignment and curved surfaces

⚙ Two Complementary Fastening Systems

SkyLoc® SN (Stud-Nut)

Multi-lead thread with integrated locking mechanism for quick-release structural applications. Available in Flat Head, Pan Head, and Knurled Head configurations.

SkyLoc® EXT (External-Thread)

Beam-style locking element for maximum structural performance and robust vibration resistance.

Applications

Aircraft engine access panels, nacelles, avionics enclosures, primary and secondary structural panels, high-performance motorsport bodywork, defense platforms.
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