QUICK OPERATING 1/4-TURN FASTENERS 28F SERIES
28F Series. Panel Preparation and Installation Data.
28F Series. Stud Assemblies and Receptacles
Features: Designed for decorative styling. Clip-on receptacle provides high assembly rates. Receptacles have low profile for minimum interior projection.
Specifications: Ultimate tensile strength: 300 lbs. Working strength: 200 lbs. Stud grip in increments: .030 inch. For other styles, materials or finishes, contract Camloc Products Division.
| Stud Assemblies
Note: Part numbers shown are basic part numbers only. See ordering information on Page A-36 for required dash numbers. |
 Slo tted Recess |
 Cro ss Recess |
 Fixed Win g |
| Material | Part No. | Part No. | Part No. |
| Stainless Steel | 28S11-[ ] | — | 28S7-[ ]A |
| Steel (Cadmium Plated) | 28S1-[ ] | 28S14-[ ] | 28S7-[ ] |
| Steel (Nickel Plated) | 28S20-[ ] | 28S19-[ ] | — |
| Receptacles |  Low Profile,
Standard Mounting Weight per 100 pcs.: 0.23 lbs. |
 Side Mounting, Lightweight
Weight per 100 pcs.: 0.45 lbs. |
 Clip–on Type
Weight per 100 pcs.:0.42 lbs. |
 Shims
Weight per 100 pcs.:0.12 lbs. |
||||||
|
Material |
Part No. | Max. Temp. | Rivet
Holes |
Part
No. |
Max. Temp. | Part No. | Max.
Temp. |
Part No. | Max Temp. | Rivet Holes |
| Stainless Steel | 312-12A | 750 F. | Plain.134 dia..128 | — | — | — | — | — | — | — |
| 312-12S | 750 F. | Plain.102 dia..096 | — | — | — | — | — | — | — | |
| 312-2WS | 750 F. | None (Weld Nibs) | — | — | — | — | — | — | — | |
| Steel
(Cadmium Plated) |
312-12 | 450 F. | Plain.102 dia..096 | 26R5-1 | 450 F. | 28R1-1AA*28R1-2AA** | 450 F
.450 F. |
— | — | — |
| Aluminum
Alloy (Anodized) |
— | — | — | — | — | — | — | 26R8-1 | 350 F. | Plain |
| — | — | — | — | — | — | — | 26R8-2 | 350 F. | C’Sunk† | |
Retaining Ring.
Order separately. See page A-58 for installation
|
Part No. |
Material |
Maximum Service Temperature |
| 28S10-1 | Stainless Steel | 750 F. |
|
28S10-2 |
Steel
(Cadmium Plated) |
450 F. |
28F Series. Panel Preparation and Installation Data.
Determine panel thickness “P” and form through hole to corresponding “X” diameter.
| “P” panel thickness | “X” dia. |
| Up to .091 | .257 |
| .092 and greater | .312 |
Installing stud into panel:
Tilt stud and insert into panel as shown. It may be necessary to compress spring by pressing stud assembly against panel. When cross pin clears, center stud assembly in mounting hole and release. (To remove stud assembly reverse procedure.)
Note: Retaining ring is required for all studs used with .312 inch mounting holes. For .257 inch mounting holes, retaining rings may be omitted where: P>(.030 N)-.100 P=Panel thickness N=Stud length dash number
Stud Ejector Spring
Provides full retraction of stud assembly to allow opening and closing of equipment without the possibility of jamming or damage.
| Part No. | Material and Finish | Max. Temp. |
| 2600-E2S | Spring Steel (Cad. Plated) | 450 F. |
Note: Add .020 to total “G” thickness when using this part. See page A-36 Weight per 100 pcs.: 1.24 lbs.
28F Series. Receptacle Installation.
312-12 Series. Standard Mounting
1. Drill #30 (.1285) diameter pilot
2. Drill holes for .093 diameter rivets using drill jig P/N
3. Enlarge pilot hole to .438 diameter using hole saw HS-437.
4. Rivet receptacle in
P/N 26R5 Series. Side Mounting Receptacle
28R Series. Clip-on Receptacle
|
Part No. |
F Panel
Thickness |
C Max. |
| 28R1-1AA | .020-.064 | .186 |
| 28R1-2AA | .065-.109 | .201 |
Note: Form .505-.495 mounting hole, then slide receptacle over mounting hole to clip in place.
28F Series. Ordering Information.
To Select Stud Dash Number.
1. Determine “G” thickness as shown below.
Notes: a) Increase “G” to allow for thickness of paint or other finishes and for the compressed thickness of any gasket.
b) “G” must be increased for the following “special” conditions:
| “Special” Condition | Increase “G” Thickness |
| 2600-E2S Ejector Spring installed | Add .020 inch |
| 26R8 shims Installed | Add .067 inch for each shim used |
2. Stud dash number varies with receptacle This information must be known before proceeding.
3. Locate “G” total thickness in the
4. Then find the corresponding stud dash number in the column designated for the selected
Important Note: If the total thickness “G” is very near the top of the thickness range, selection of the next greater dash number is recommended. For “G” thicknesses greater than those tabulated, contact Camloc Products Division.
| St ud Dash Number Select ion | |||
| “G” Total Thickness | Receptacles | ||
| 26R5 | 28R1 | 312-12 | |
| .029-.059 | — | – 3 | — |
| .060-.089 | — | – 4 | — |
| .080-.089 | -2 | — | – 2 |
| .090-.119 | – 3 | – 5 | – 3 |
| .120-.149 | – 4 | – 6 | – 4 |
| .150-.179 | – 5 | – 7 | – 5 |
| .180-.209 | – 6 | – 8 | – 6 |
| .210-.239 | – 7 | – 9 | – 7 |
| .240-.269 | – 8 | -10 | – 8 |
| .270-.299 | – 9 | -11 | – 9 |
| .300-.329 | -10 | -12 | -10 |
| .330-.359 | -11 | -13 | -11 |
| .360-.389 | -12 | -14 | -12 |
| .390-.419 | -13 | -15 | -13 |
| .420-.449 | -14 | -16 | -14 |
| .450-.479 | -15 | -17 | -15 |
| .480-.509 | -16 | -18 | -16 |
| .510-.539 | -17 | -19 | -17 |
| .540-.569 | -18 | -20 | -18 |
| .570-.599 | -19 | -21 | -19 |
| .600-.629 | -20 | -22 | -20 |
| .630-.659 | -21 | -23 | -21 |
| .660-.689 | -22 | -24 | -22 |
| .690-.719 | -23 | -25 | -23 |
| .720-.749 | -24 | -26 | -24 |
| .750-.779 | -25 | -27 | -25 |
| .780-.809 | -26 | -28 | -26 |
| .810-.839 | -27 | -29 | -27 |
| .840-.869 | -28 | -30 | -28 |
| .870-.899 | -29 | -31 | -29 |
| .900-.929 | -30 | -32 | -30 |
| .930-.959 | -31 | -33 | -31 |
| .960-.989 | -32 | -34 | -32 |
| .990-1.019 | -33 | -35 | -33 |
| 1.020-1.049 | -34 | -36 | -34 |
| 1.050-1.079 | -35 | -37 | -35 |
| 1.080-1.109 | -36 | -38 | -36 |
| 1.110-1.139 | -37 | -39 | -37 |
| 1.140-1.169 | -38 | -40 | -38 |
| 1.170-1.199 | -39 | -41 | -39 |
| 1.200-1.229 | -40 | -42 | -40 |
| 1.230-1.259 | -41 | -43 | -41 |
| 1.260-1.289 | -42 | -44 | -42 |
| 1.290-1.319 | -43 | -45 | 43 |
| 1.320-1.349 | -44 | -46 | -44 |
| 1.350-1.379 | -45 | -47 | -45 |
| 1.380-1.409 | -46 | -48 | -46 |
| 1.410-1.439 | -47 | -49 | -47 |
| 1.440-1.469 | -48 | -50 | -48 |
| 1.470-1.499 | -49 | -51 | -49 |
| 1.500-1.529 | -50 | -52 | -50 |