JEM # HPI-HPS-72HPS-72
CAT40 retention knob, MAS 403 P40T-1, 45°, 5/8-11, solidCAT4045°5/8-11Solid
SpecificationsFrom Pioneer's catalog
- Taper
- CAT40
- Style
- MAS 403 P40T-1
- Angle
- 45°
- Thread
- 5/8-11
- Overall length
- 2.250"
- Flange to end of knob
- 1.266"
- Knob Ø
- .591"
- Neck Ø
- .394"
- Coolant
- Solid
- Socket
- TWS-M19
Machines
Machines this knob is listed for
CAT40, 45°, MAS 403 P40T-1.Verify firstListed as a guide only. Builders change knob specs between models, years and coolant options, so check your machine’s manual, or send us the make, model and serial number and we’ll confirm before you order. The wrong retention knob can let a holder pull out of the spindle.
| Builder | Machines | Taper |
|---|---|---|
| DMG MORI (formerly Hitachi Seiki) | VK, VM-40/50, VS-40/50/60, VKC, VA, HG-400, HS, HK-630, HA series; Hitachi Seiki VA-35/40, HC-400, VK-45, VM-40, Minimatic | BT40 / CAT40 |
| Fryer | Fryer VMCs / bed mills (CAT40, BT40, CAT50) | CAT40 / BT40 / CAT50 |
| Haas | All CT40 mills (VF series, Mini Mill, UMC, EC-400 etc.)Builder p/n 04-0292 (solid), 04-0293 (TSC), 04-0201 (TSC 10-pack) | CAT40 |
| Hwacheon | VESTA-660, VESTA-650T, VESTA-610D, VESTA-1000+, SIRIUS-UL+ (12K/14K/20K) and other BT40 models | BT40 / CAT40 |
| Hyundai WIA | KF series with CAT40/BCV40 option | CAT40 |
| Hyundai WIA / Kia (legacy) | Kia-built machines: VA-40, KM-40HA (45 degrees); Kiamaster, KV-40A (90 degrees) | BT40 / CAT40 |
| Johnford | VMC-1050 and other Johnford VMCs | BT40 / CAT40 / CAT50 |
| Kitamura | Older Mycenter 3, 4, 5, 6, H300, H300B, H500, H600, H800, Jig Center 7/8 | CAT40 / BT40 / CAT50 |
| Leadwell | MCV-0, MCV-OP, MCV-550E/S/D, MCV-610S, MCV-760XL, V-350, V-410, MCH-350/500 | BT40 / CAT40 |
| OKK | PCV, VM, VP, VC, HM, HP series, TRC, AMC, DGM, GC, PG8, PM400III, DV5, VB53, GR400 (40-taper)Coolant-through takes the builder’s own knob | BT40 / CAT40 |
| Okuma | Okuma-Howa / MILLAC series (Millac 3-VA, 4-VA, 4-H; MILLAC V/H; MM-300, ML-300) | BT40 / CAT40 |
| Toyoda / JTEKT | FA, FV, FVN, FXN, JV, PV series, e500H4, UX570 (40-taper); FHN-40, FV-45, FVN-40Coolant-through takes the builder’s own knob | BT40 / CAT40 |
| Yasda | YBM, YPC, VPC series, H30i, H40 (40-taper)Coolant-through takes the builder’s own knob | BT40 / CAT40 |
| YCI / Yama Seiki (YCM) | YCM VMC-60A/72A, MAX3 and other YCI machines | BT40 / CAT40 / CAT50 |
Pioneer’s own machine guide lists this knob for Haas (CAT40).
Don’t see your machine? Call the counter at 408-834-8656 with the make, model and serial number and we’ll find the right knob.
Pioneer’s dimensions
- Overall length (L1)
- 2.250"
- Head Ø (D1)
- .591"
- Neck Ø (D2)
- .394"
- Pilot Ø (D3)
- .641"
- Projection (L2)
- 1.266"
- Pull location (L3)
- .990"
- Flange (L4)
- .236"
- Hex flats (F)
- 19mm
- Thread
- 5/8-11
- Tightening socket
- TWS-M19