CERTIFIED AS9100D
SINCE 1982
MADE IN USA USA
CALL US (352) 326-0001
✓ Online Sales Operating at 100% | ⚡ Fast Lead Times | 📦 Same-Day Shipping on In-Stock Items | Need help selecting a part? Try our AI Part Selector →

Skybolt Part Selector

FIND MY PART
Shop by Category
Navigate:  StoreFront / SkyLoc® Structural Fasteners / SkyLoc® Stud Nut (SN) Series / SkyLoc® Quad Lead Flat Head

SkyLoc® SN Flat Head Studs

 

Low-Profile Structural Fastening

Flat Head SN studs provide flush or near-flush installation where aerodynamic smoothness, minimal protrusion, or clearance constraints are critical. Available in slotted and non-slotted configurations.

✓ Series Available:

  • QL8C20 Series — Standard Flat Head
  • QL8C32 Series — Slotted Flat Head (manual installation/removal capability)

⚡ Typical Applications:

  • Aircraft cowling panels
  • Avionics bay covers
  • Flush-mounted access panels
  • Aerodynamic surface installations
SN Flat Head Reference Table
🔍 CLICK TO ENLARGE

🔧 QL8C62 Installation

Kee'd Threaded Insert — Install .010–.030 below surface

  1. Drill support structure with 29/64 drill to depth of .775 (thru hole tap)
  2. C'Sink 82° or 100° to .510–.520 width
  3. Tap 1/2-13 UNC-2B, .650 min depth
  4. Install .010–.030 below surface
  5. For hardened supports, broach with QL8-B1 Tool
  6. Drive Kees with Skybolt QL8-T1 Tool

🔧 QL8C78 Installation

Non-Kee'd Threaded Insert — Receptacle is flush with surface

  1. Drill support structure with 25/64 drill to depth of .775 (thru hole tap)
  2. C'Bore .105 to .140
  3. Tap 7/16-20 UNF-2B
  4. Loctite threads to desired depth

📋 Important Notes:

(1) Ensure proper length stud nut is used for panel thickness. If torque loads exceed 15 in-lbs and outer panel is not secure, the cams will be damaged requiring receptacle replacement. If cams are skipping, replace stud nut.

(2) If the stud nut is too long, it will force the end of the stud nut to compress the springs into coil bind. When this happens, the notches on the end will shear the small nubs on top of the upper cam, rendering the locking feature useless.

(3) Minimum Grip reduces 1:1 for every .001" receptacle is below the surface.
(4) If Min Grip is exceeded (less than charted), the cam system will fail requiring replacement of the receptacle.

SkyLoc® Quad Lead Flat Head
QL8C20-0FH THUMBNAIL
L=.375 Grip .095-.155
$13.83 - $17.50 Price Details
Alternate Part Number 1: CA1820-0
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
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
QL8C32-0FHS THUMBNAIL
Flat Head - Slotted Stud L=.375 Grip .093-.155
$13.65 - $17.50 Price Details
Alternate Part Number 1: CA1832-0
QL8C32-1FHS THUMBNAIL
Flat Head - Slotted Stud L=.437 Grip .156-.250
$13.65 - $17.50 Price Details
Alternate Part Number 1: CA1832-1
QL8C32-2FHS THUMBNAIL
Flat Head - Slotted Stud L=.531 Grip .251-.343
$12.76 - $16.36 Price Details
Alternate Part Number 1: CA1832-2
QL8C32-3FHS THUMBNAIL
Flat Head - Slotted Stud L=.625 Grip .344-.437
$12.76 - $16.36 Price Details
Alternate Part Number 1: CA1832-3
QL8C32-4FHS THUMBNAIL
Flat Head - Slotted Stud L=.718 Grip .438-.531
$14.04 - $18.00 Price Details
Alternate Part Number 1: CA1832-4
QL8C32-5FHS THUMBNAIL
Flat Head - Slotted Stud L=.812 Grip .532-.625
$14.04 - $18.00 Price Details
Alternate Part Number 1: CA1832-5
QL8C32-6FHS THUMBNAIL
Flat Head - Slotted Stud L=.906 Grip .626-.718
$14.04 - $18.00 Price Details
Alternate Part Number 1: CA1832-6
QL8C32-7FHS THUMBNAIL
Flat Head - Slotted Stud L=1.000 Grip .719-.812
$14.04 - $18.00 Price Details
Alternate Part Number 1: CA1832-7
QL8C32-8FHS THUMBNAIL
Flat Head - Slotted Stud L=1.093 Grip .813-.906
$15.44 - $19.80 Price Details
QL8C32-9FHS THUMBNAIL
Flat Head - Slotted Stud L=1.187 Grip .907-.1000
$15.44 - $19.80 Price Details
QL8C32-10FHS THUMBNAIL
Flat Head - Slotted Stud L=1.281 Grip 1.001-1.093
$15.44 - $19.80 Price Details
QL8C32-11FHS THUMBNAIL
Flat Head - Slotted Stud L=1.375 Grip 1.094-1.187
$15.44 - $19.80 Price Details
QL8C32-12FHS THUMBNAIL
Flat Head - Slotted Stud L=1.468 Grip 1.188-1.281
$15.44 - $19.80 Price Details
QL8C32-13FHS THUMBNAIL
Flat Head - Slotted Stud L=1.562 Grip 1.282-1.375
$16.99 - $21.78 Price Details
Alternate Part Number 1: CA1832-13
QL8C32-14FHS THUMBNAIL
Flat Head - Slotted Stud L=1.656 Grip 1.376-1.468
$16.99 - $21.78 Price Details
Alternate Part Number 1: CA1832-14
352-326-0001
Returning Customer?
Shipping Policy
Shopping Cart
 

The Shopping Cart is currently empty

Shopping Cart Software by TrueCommerce
Security Seals