1191-4EN375 Tanged Non-Locking Insert
SKU: 04588 | MPN: 1191-4EN375Details
| Specifications | |
|---|---|
| Thread Size | 1/4-28 |
| Coating | No Finish |
| Wire Insert Series | Non-Locking |
| Wire Insert Type | Tanged |
| Material | Nitronic |
| Material | Nitronic 60 |
| Length Nominal Dia. | 1-1/2 Dia. |
| Material Specification | Alloy number UNS S21800 |
| Number of Free Coils | 8-1/4 |
| Free Coil Diameter Min. | .306 in |
| Free Coil Diameter Max. | .326 in |
| Finish Specification | n/a |
| Drilling Data | |
| Suggested Drill Size ~ Aluminum | G |
| Suggested Drill Size ~ Steel, Magnesium, Plastic | 6.7 mm |
| Minimum Drilling Depth for Bottoming Taps | .518 in |
| Minimum Drilling Depth for Plug Taps | .714 in |
| Drilling Information | The minimum drilling depths shown below allow for the following recommended practices: 1. Countersinking the drilled hole to prevent a feather edge at the start of the tapped hole. 2. 3/4 - 1-1/2 pitch of insert ""set-down"" to allow for maximum production tolerance. Dimensions are shown for both plug and bottoming taps. (Note: Plug taps 5/16"" and smaller have a male center and the drilled hole depth dimensions allow for this length (one half of the diameter of the holt). Calculation of dimension ""F"" is as follows For Plug Taps 5/16"" and smaller: F = Insert Nominal Length (Q) + .5 (Bolt Nominal Diameter) + 4P (Tap Chamfer) + 1P (allowance for countersink and maximum insert set-down). For Plug Taps 3/8"" and larger: F = Insert Nominal Length(Q) + 4P (Tap Chamfer) + 1P (allowance for countersink and maximum insert set-down). For Bottoming Taps: F = Insert Nominal Length (Q) + 2P (Tap Chamfer) + 1P (allowance for countersink and maximum insert set-down). |
| Tapping Data | |
| Countersink Diameter Min. | .290 in |
| Countersink Diameter Max. | .320 in |
| Pitch Diameter Min. | .273 in |
| Pitch Diameter Max. ~ Class of Fit 3B_in | .275 in |
| Pitch Diameter Max. ~ Class of Fit 2B_in | .276 in |
| Minimum Tapping Depth | .410 in |
| Tap Major Diameter Max. | .300 in |
| Taps & Gages | |
| Tap High Spiral Flute Bottoming 2B | 6906-4 |
| Tap High Spiral Flute Bottoming 3B | 5906-4 |
| Tap Spiral Point Plug 2B | 4FSA |
| Tap Spiral Point Plug 3B | 4FSB |
| Tap Straight Flute Bottoming 2B | 4FBA |
| Tap Straight Flute Bottoming 3B | 4FBB |
| Tap Straight Flute Plug 2B | 4FPA |
| Tap Straight Flute Plug 3B | 4FPB |
| Reference Gage 2B | 1441-4 |
| Reference Gage 3B | 1694-4 |
| Working Gage 2B | 3694-4 |
| Working Gage 3B | 1443-4 |