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Quarter-Turn Panel Fasteners

SK4002-23S THUMBNAIL
Collared Slot Stud - 303 Stainless - 1050 lbs
$9.27 - $10.30 Price Details
Alternate Part Number 1: 4002-23S
Alternate Part Number 2: 1142002-23
Alternate Part Number 3: S2319C723
Alternate Part Number 4: NSN5325-00-487-8013
SK4002-23S45 THUMBNAIL
Collared Slot Stud - Inconel Spring - Stainless - 1050 Lbs
$15.29 - $16.99 Price Details
Alternate Part Number 1: 40S45-23
Alternate Part Number 2: 1142004-23
4000 Series Wing - Steel - Cadmium Plated
$25.73 - $28.59 Price Details
Alternate Part Number 1: 4002-23W
Alternate Part Number 2: 1142007-23
Alternate Part Number 4: NSN5325-00-655-4778

Stud 4002 Steel Slot
$12.08 - $13.42 Price Details
Alternate Part Number 1: 4002-24
Alternate Part Number 2: 1142000-24
Alternate Part Number 4: NSN5325-00-449-3019
SK4002-24S THUMBNAIL
Collared Slot Stud - 303 Stainless - 1050 lbs
$9.27 - $10.30 Price Details
Alternate Part Number 1: 4002-24S
Alternate Part Number 2: 1142002-24
Alternate Part Number 3: S2319C724
SK4002-24S45 THUMBNAIL
Collared Slot Stud - Inconel Spring - Stainless - 1050 Lbs
$15.29 - $16.99 Price Details
Alternate Part Number 1: 40S45-24
Alternate Part Number 2: 1142004-24

4000 Series Wing - Steel - Cadmium Plated
$25.73 - $28.59 Price Details
Alternate Part Number 1: 4002-24W
Alternate Part Number 2: 1142007-24
Alternate Part Number 4: NSN5325-00-290-3824
Stud 4002 Steel Slot
$12.08 - $13.42 Price Details
Alternate Part Number 1: 4002-25
Alternate Part Number 2: 1142000-25
Alternate Part Number 4: NSN5325-00-298-7011
SK4002-25S THUMBNAIL
Collared Slot Stud - 303 Stainless - 1050 lbs
$9.27 - $10.30 Price Details
Alternate Part Number 1: 4002-25S
Alternate Part Number 2: 1142002-25
Alternate Part Number 3: S2319C725

SK4002-25S45 THUMBNAIL
Collared Slot Stud - Inconel Spring - Stainless - 1050 Lbs
$15.29 - $16.99 Price Details
Alternate Part Number 1: 40S45-25
Alternate Part Number 2: 1142004-25
4000 Series Wing - Steel - Cadmium Plated
$25.73 - $28.59 Price Details
Alternate Part Number 1: 4002-25W
Alternate Part Number 2: 1142007-25
Alternate Part Number 4: NSN5325-00-028-7089
Stud 4002 Steel Slot
$16.20 - $18.00 Price Details
Alternate Part Number 1: 4002-26
Alternate Part Number 2: 1142000-26
Alternate Part Number 4: NSN5325-00-297-9652

4000 Series Wing - Steel - Cadmium Plated
$25.73 - $28.59 Price Details
Alternate Part Number 1: 4002-26W
Alternate Part Number 2: 1142007-26
Stud 4002 Steel Slot
$16.20 - $18.00 Price Details
Alternate Part Number 1: 4002-27
Alternate Part Number 2: 1142000-27
Alternate Part Number 4: NSN5325-00-834-5589
4000 Series Wing - Steel - Cadmium Plated
$25.73 - $28.59 Price Details
Alternate Part Number 1: 4002-27W
Alternate Part Number 2: 1142007-27
Alternate Part Number 4: NSN5325-00-017-6415

Stud 4002 Steel Slot
$16.20 - $18.00 Price Details
Alternate Part Number 1: 4002-28
Alternate Part Number 2: 1142000-28
Alternate Part Number 4: NSN5325-00-734-9263
Stud 4002 Steel Slot
$16.20 - $18.00 Price Details
Alternate Part Number 1: 4002-29
Alternate Part Number 2: 1142000-29
Alternate Part Number 4: NSN5325-00-141-7952
SK4002-2S THUMBNAIL
Collared Slot Stud - 303 Stainless - 1050 lbs
$5.41 - $6.01 Price Details
Alternate Part Number 1: 4002-2S
Alternate Part Number 2: 1142002-2
Alternate Part Number 3: S2319C72

SK4002-2S45 THUMBNAIL
Collared Slot Stud - Inconel Spring - Stainless - 1050 Lbs
$9.19 - $10.21 Price Details
Alternate Part Number 1: 40S45-2
Alternate Part Number 2: 1142004-2
Alternate Part Number 4: NSN5325-00-484-8854
Slotted - High Temp - Stainless
$9.19 - $10.21 Price Details
Alternate Part Number 1: 40S45-2
Alternate Part Number 2: 1142004-2
Alternate Part Number 4: NSN5325-00-484-8854
SK4002-2SFW THUMBNAIL
4000 Series Folding Wing Patent Pending
$10.42 - $11.58 Price Details
Alternate Part Number 1: 40S47-2

SK4002-2SR THUMBNAIL
4000 Series Folding Ring Handle
$12.11 - $13.46 Price Details
4000 Series Wing - Stainless
$11.31 - $12.57 Price Details
Alternate Part Number 1: 4002-2SW
Alternate Part Number 2: 1142016-2
4000 Series Wing - Steel - Cadmium Plated
$10.88 - $12.08 Price Details
Alternate Part Number 1: 4002-2W
Alternate Part Number 2: 1142007-2
Alternate Part Number 4: NSN5325-00-558-7778

Stud 4002 Steel Slot
$4.67 - $5.19 Price Details
Alternate Part Number 1: 4002-3
Alternate Part Number 2: 1142000-3
Alternate Part Number 4: NSN5325-00-639-4889
Stud 4002 Steel Slot
$16.20 - $18.00 Price Details
Alternate Part Number 1: 4002-30
Alternate Part Number 2: 1142000-30
Alternate Part Number 4: NSN5325-00-050-2007
Stud 4002 Steel Slot
$16.20 - $18.00 Price Details
Alternate Part Number 1: 4002-31
Alternate Part Number 2: 1142000-31
Alternate Part Number 4: NSN5325-00-058-6300

Stud 4002 Steel Slot
$16.20 - $18.00 Price Details
Alternate Part Number 1: 4002-32
Alternate Part Number 2: 1142000-32
Alternate Part Number 4: NSN5325-00-001-9016
Stud 4002 Steel Slot
$16.20 - $18.00 Price Details
Alternate Part Number 1: 4002-33
Alternate Part Number 2: 1142000-33
Alternate Part Number 4: NSN5325-00-236-6701
Stud 4002 Steel Slot
$16.20 - $18.00 Price Details
Alternate Part Number 1: 4002-34
Alternate Part Number 2: 1142000-34

Stud 4002 Steel Slot
$16.20 - $18.00 Price Details
Alternate Part Number 1: 4002-35
Alternate Part Number 2: 1142000-35
Alternate Part Number 4: NSN5325-00-058-6301
Stud 4002 Steel Slot
$24.94 - $27.72 Price Details
Alternate Part Number 1: 4002-36
Alternate Part Number 2: 1142000-36
Alternate Part Number 4: NSN5325-00-690-7882
SK4002-3S THUMBNAIL
Collared Slot Stud - 303 Stainless - 1050 lbs
$5.41 - $6.01 Price Details
Alternate Part Number 1: 4002-3S
Alternate Part Number 2: 1142002-3
Alternate Part Number 3: S2319C73
Alternate Part Number 4: NSN5325-00-582-7769

SK4002-3S45 THUMBNAIL
Collared Slot Stud - Inconel Spring - Stainless - 1050 Lbs
$9.19 - $10.21 Price Details
Alternate Part Number 1: 40S45-3
Alternate Part Number 2: 1142004-3
Alternate Part Number 4: NSN5325-00-602-4183
Slotted - High Temp - Stainless
$9.19 - $10.21 Price Details
Alternate Part Number 1: 40S45-3
Alternate Part Number 2: 1142004-3
Alternate Part Number 4: NSN5325-00-602-4183
SK4002-3SFW THUMBNAIL
4000 Series Folding Wing Patent Pending
$10.42 - $11.58 Price Details
Alternate Part Number 1: 40S47-3

SK4002-3SR THUMBNAIL
4000 Series Folding Ring Handle
$12.11 - $13.46 Price Details
4000 Series Wing - Stainless
$11.31 - $12.57 Price Details
Alternate Part Number 1: 4002-3SW
Alternate Part Number 2: 1142016-3
Alternate Part Number 4: NSN5325-00-085-4126
4000 Series Wing - Steel - Cadmium Plated
$10.88 - $12.08 Price Details
Alternate Part Number 1: 4002-3W
Alternate Part Number 2: 1142007-3
Alternate Part Number 4: NSN5325-00-297-1970

Stud 4002 Steel Slot
$4.67 - $5.19 Price Details
Alternate Part Number 1: 4002-4
Alternate Part Number 2: 1142000-4
Alternate Part Number 4: NSN5325-00-290-8028
4000 Series Wing - Steel - Cadmium Plated
$34.75 - $38.61 Price Details
Alternate Part Number 1: 4002-40W
Alternate Part Number 2: 1142007-40
Alternate Part Number 4: NSN5325-00-498-7277
Stud 4002 Steel Slot
$24.94 - $27.72 Price Details
Alternate Part Number 1: 4002-41
Alternate Part Number 2: 1142000-41
Alternate Part Number 4: NSN5325-00-840-6031

Stud 4002 Steel Slot
$24.94 - $27.72 Price Details
Alternate Part Number 1: 4002-42
Alternate Part Number 2: 1142000-42
Alternate Part Number 4: NSN5325-00-689-7443
SK4002-4S THUMBNAIL
Collared Slot Stud - 303 Stainless - 1050 lbs
$5.41 - $6.01 Price Details
Alternate Part Number 1: 4002-4S
Alternate Part Number 2: 1142002-4
Alternate Part Number 3: S2319C74
Alternate Part Number 4: NSN5325-00-582-7773
SK4002-4S45 THUMBNAIL
Collared Slot Stud - Inconel Spring - Stainless - 1050 Lbs
$9.19 - $10.21 Price Details
Alternate Part Number 1: 40S45-4
Alternate Part Number 2: 1142004-4
Alternate Part Number 4: NSN5325-00-498-0816

Slotted - High Temp - Stainless
$9.19 - $10.21 Price Details
Alternate Part Number 1: 40S45-4
Alternate Part Number 2: 1142004-4
Alternate Part Number 4: NSN5325-00-498-0816
Slotted - High Temp - Stainless
$9.19 - $10.21 Price Details
Alternate Part Number 1: 40S45-5
Alternate Part Number 2: 1142004-5
Alternate Part Number 4: NSN5325-00-124-9302
SK4002-4SFW THUMBNAIL
4000 Series Folding Wing Patent Pending
$12.51 - $13.90 Price Details
Alternate Part Number 1: 40S47-4

SK4002-4SR THUMBNAIL
4000 Series Folding Ring Handle
$12.11 - $13.46 Price Details
4000 Series Wing - Stainless
$11.31 - $12.57 Price Details
Alternate Part Number 1: 4002-4SW
Alternate Part Number 2: 1142016-4
Alternate Part Number 4: NSN5325-00-015-7952
<<   <  Page of 21  >   >>
 

About Skybolt Fasteners

Precision-Engineered Quarter-Turn Fasteners for Aerospace, Defense, and High-Performance Applications

Skybolt manufactures high-strength panel fasteners, quick-release fasteners, and captive fastener systems in 300-series stainless steel and proprietary Skytanium® alloys. Our products serve general aviation, commercial aerospace, defense, industrial, and marine markets with design strength ratings that meet or exceed NASM5591 Chart II specifications.

Product Innovations

  • Skytanium® Alloy – 30–50% weight reduction with steel-equivalent strength properties
  • Diamondhead® CLoc® Rc – 27 stainless fasteners meet NASM5591 Chart II ratings (independently tested)
  • Adjustable-Depth Fasteners – Accommodates varying panel stack-ups
  • Specialty Head Styles – Wing, folding ring, and folding wing configurations
  • Nutsert-Installed Systems – Blind installation for limited-access applications
  • Quad-Lead Skyloc® – Positive-locking structural fastening

Quarter-Turn Fastener Systems

Skybolt produces fastener families compatible with industry-standard Camloc®, Dzus®, and Airloc® designs:

  • CLoc® Series – Camloc®-style quarter-turn fasteners (most common in general aviation and commercial aerospace)
  • DLoc® Series – Dzus®-style spring-loaded fasteners
  • ALoc® Series – Airloc®-style fasteners (common on Beechcraft applications)

Most Skybolt quarter-turn fasteners use 300-series stainless steel, avoiding the corrosion susceptibility of A286 or 400-series alloys while maintaining superior strength-to-weight performance.

📋 Application Guide

Select the appropriate CLoc® series based on structural requirements and panel geometry:

ApplicationRecommended SeriesNotes
Aircraft – Restricted Panel Overlap CLoc® 2500 <0.500" mounting width
Aircraft – Standard Panel CLoc® 2600 / 2700 / 2800 ≥0.500" mounting width
Beechcraft (Bonanza, Baron) CLoc® 4000 & ALoc® OEM-style compatibility
Industrial / Heavy-Duty CLoc® 4000 / 5000 / 6000 Semi-structural to structural loading
Defense / Armor Plating CLoc® 6000 Blast-resistant applications
Rotary/Fixed-Wing Aircraft CLoc® 2000 / 4000 / 5000 / 6000 Load-rated by application
Land-Based Vehicles CLoc® 5400 / 5500 High-vibration environments
Marine CLoc® 2000 Corrosion-resistant stainless
NASCAR / Road Racing CLoc® 2800 (Skytanium®) Maximum weight savings
Sprint Car / Oval Track ZLoc® 6 Series High-cycle durability
NHRA Drag Racing ZLoc® 6 Series Extreme load / vibration

🔧 Custom Engineering & Production

Skybolt provides full design-to-production support for application-specific fastener requirements. Our engineering team can develop custom solutions, typically within 30 days depending on component complexity and approval requirements.

Core Capabilities:

  • Application analysis and fastener selection
  • Custom material specifications
  • Prototype development and validation
  • Production tooling and manufacturing
  • FAA-PMA certification support (where applicable)

Trademark Notices: Camloc® is a registered trademark of Howmet Aerospace Inc. Dzus® is a registered trademark of Southco, Inc. Airloc® is a registered trademark of Lisi Aerospace.

Skybolt Fasteners is an independent manufacturer. Product references indicate design compatibility only. Skybolt is not affiliated with, endorsed by, or sponsored by these trademark holders.

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