United Drill Bushing · Headless Liners
Headless Liners 1/4
- MPN
- 1/4
- SKU
- DB-UDB-000003
Headless Liners — A I.D. RANGE: NOM. /; B O.D. SIZE: U.S.A. INCH
United Drill Bushing prices this line on request. Add it to your quote — we answer within 1 business day, and quotes carry the exact part number so nothing gets re-found.
The United Drill Bushing 1/4 is a precision drill bushing from the Headless Liners line. It is specified at a dia .264, b dia .336, c flute length 3.48 and d oal 4.50. It guides and supports the drill in jig and fixture work, holding hole location and perpendicularity across production runs and protecting the fixture from wear. All Industry Supplies sources this item for Minnesota-area manufacturers, with certification documentation available on request for aerospace, medical and defense work.
| A | 1-1/4 |
|---|---|
| B | 1.758 |
| C | 1-3/16 |
| D | 1/2 |
| E | 9/16 |
| F | 23/64 |
| G | 3/32 |
| H | .800 |
| J | 1.800 |
| K | .760 |
| L | .730 |
| M | 1.500 |
| N | 1.060 |
| P | .480 |
| R | .830 |
| S | .720 |
| T | .105 |
| U | .380 |
| A DIA | .264 |
| B DIA | .336 |
| D OAL | 4.50 |
| D THD | 7/16-20 |
| E DIA | .312 |
| E MIN | .125 |
| TOUGH | 15/32 5/16 |
| UNITED | PC-16-4 PC-16-5 PC-16-6 PC-16-8 PC-16-12 |
| B -.0003 | .2516 |
| F ±.010 | .280 |
| C BODY DIA | .865 |
| I.D. RANGE | #55 - 9/64 |
| B O.D. SIZE | U.S.A. INCH |
| F PILOT DIA | 25/64 |
| GP PART NO. | GP-175-26-2 27/64 |
| A I.D. RANGE | NOM. / |
| DOUBLE SHEAR | 8,200 |
| F (1/3 of A) | .080 |
| B ID SLOT LEN | 3/8 .375 |
| B FLUTE LENGTH | 2.500 |
| C FLUTE LENGTH | 3.48 |
| DOWEL PART NO. | UDB-677130 |
| A ID SLOT WIDTH | 1/4 .2500 |
| E FILLET RADIUS | .030 |
| A OVERALL LENGTH | 4.562 |
| TYPE A – ANGLED | UDB-800060A |
| TYPE B - STRAIGHT | UDB-800070A |
| A I.D. DRILL RANGE | INCH / METRIC |
| COLLAR THREAD SIZE | A MAX (DRILL SHANK I.D.) |
| ROUND PIN PART NO. | UDB-621496 |
| B DIA NOM. - ACTUAL | 3/16 .1878-.1876 |
| RELIEVED PIN PART NO. | UDB-621616 |
| GROUP 2 & NOM FAST’R | 1/4 |
| GROUP 5 & NOM FAST’R | 3/8 |
| UNITED PART NO. GROUP 1 | UTLD-2040B-1-4 |
| UNITED PART NO. GROUP 2 | UTLD-2040A-2-4 |
| UNITED PART NO. GROUP 4 | UTLD-2030BR-4-4 |
| UNITED PART NO. GROUP 5 | UTLD-2030BR-5-6 |
| A - X ROUND PILOT ACTUAL | .2495-.2492 |
| ADJUST TO REQUIRED LENGTH | 15/32 5/16 |
| A PILOT DIA +0000/–.0005 | .2495 |
| UNITED PART NO. GROUPS 5-6 | UTLR-255604 |
| A - X RELIEVED PILOT ACTUAL | .2493-.2490 |
| A - Y RELIEVED PILOT ACTUAL | .2485-.2482 |
| A - Z RELIEVED PILOT ACTUAL | .2470-.2467 |
| B PILOT DIA +.0000/–.0005 | .2485 |
| GROUP 2 & NOM FAST’R SIZE | 1/4 |
| 1"-14 L.H. THD. (EXCEPT 62000) | 9/32 |
| 2"-16 L.H. THD. (EXCEPT 65000) | 1-1/32 3/8 |
| X = CLOSE TOLERANCE ROUND PIN P/N | UDB-623500 |
| 1-1/2"-12 L.H. THD. (EXCEPT 64000) | 15/32 5/16 |
| X = CLOSE TOLERANCE RELIEVED PIN P/N | UDB-623521 |
| Z = LOOSE TOLERANCE RELIEVED PIN P/N (-Z) | UDB-623521-Z |
| Y = MEDIUM TOLERANCE RELIEVED PIN P/N (-Y) | UDB-623521-Y |
| 5/8" Travel SAME LOCK-THREAD AS 24000 Available in STANDARD or ULTRA III | 15/32 5/16 |
How do I get a price for the United Drill Bushing 1/4?
Add it to a quote request or call 1-763-421-8250. All Industry Supplies answers quote requests within 1 business day.
Is the United Drill Bushing 1/4 available from stock?
All Industry Supplies sources United Drill Bushing to order from the manufacturer. Lead times are confirmed on your quote — most items ship within days.