PT01
Smooth Ball End Bolt
Swivel-ball contact bolt with a precision ground, smooth top face for even clamping on sloped or uneven surfaces.
Catalog PT01–PT59
Workholding Aux Parts
58 part families and 718 part numbers – ball end bolts, swivel clamping screws, T-slot nuts and bolts, washers, gripper pads, locating keys, bushings, spring locating pins and more. Every part page lists full metric dimensions, materials and heat treatment, with a dimension drawing.
Bolts & Clamping Screws
Ball end contact bolts, swivel clamping screws, shoulder bolts and T-slot bolts.
PT01
PT02
Serrated Ball End Bolt
Swivel-ball contact bolt with a serrated gripping face for holding rough, cast or uneven surfaces.
PT16
Swivel Clamping Screw
Headless threaded swivel clamping screw with a swivelling ball tip in round, flat or serrated styles, M4 to M24.
PT17
Swivel Shoulder Clamping Screw
Socket-head shoulder clamping screw with a swivelling ball tip in round, flat or serrated styles, M6 to M24.
PT31
Shoulder Bolt
Ground-shoulder socket bolt that both positions and fastens fixture components.
PT40
T-Slot Bolt
Forged, heat-treated T-slot bolt from M12 to M24 in lengths up to 315 mm.
PT50
Smooth Ball End Bolt (Round Body)
Round-body threaded swivel contact bolt with a precision ground smooth face and rated maximum load.
PT51
Serrated Ball End Bolt (Round Body)
Round-body threaded swivel contact bolt with a serrated gripping face for rough surfaces.
PT52
Smooth Ball End Pad (Press-Fit)
Press-fit swivel ball pad with a smooth ground face (listed in the catalog as Smooth Ball End Bolt).
PT53
Serrated Ball End Pad (Press-Fit)
Press-fit swivel ball pad with a serrated face for rough surfaces.
Nuts & T-Slot Nuts
T-slot nuts, flange, knurled, extension and swivel flange nuts.
PT03
Knurled Nut
Hand-tightened knurled nut for quick, tool-free assembly of fixture components.
PT04
Flange Nut
Heat-treated hex flange nut that spreads clamping load over a wide bearing face.
PT05
Extension Nut
Long hex coupling nut used to extend the length of clamping studs.
PT06
T-Slot Nut
Heat-treated T-slot nut for anchoring studs and clamps in machine table T-slots, M8 to M24.
PT08
T-Slot Nut (Ground)
Precision ground T-slot nut for accurate positioning inside the T-slot.
PT33
Knurled Nut (with Set Screw)
Large knurled hand nut with a radial set screw for quick tool-free assembly.
PT38
Rotary T-Slot Nut
Drop-in rotary T-slot nut that inserts from the top of the slot and turns into position, no sliding in from the table end.
PT41
Swivel Flange Nut
Hex flange nut with a spherical seat that pairs with the PT25 spherical washer to self-align on angled studs.
PT42
T-Slot Nut Blank
Undrilled T-slot nut blank, ready to machine for custom threads, dowels or fixture details.
Studs & Eyebolts
Double-end clamping studs, swing eyebolts and lifting eyebolts.
PT07
Clamping Stud
Double-end threaded clamping studs from M8 to M24 in lengths from 50 to 500 mm.
PT09
Eyebolt
Swing eyebolt with a reamed eye for smooth swiveling; pairs with the PT28 swivel joint support.
PT30
Lifting Eyebolt
Forged lifting eyebolt rated from 80 kg (M8) to 3,400 kg (M42) for handling fixtures and vises.
Washers & Spacers
C washers, swing C washers, spherical washers and ground spacers.
PT22
Spacer
Ground, hardened spacer for raising or extending jig components to a precise height.
PT23
"C" Washer
Slotted C washer that slides in and out under a nut for fast part changeover.
PT24
Swing "C" Washer
Pivoting C washer held captive by its own screw so it swings clear for loading.
PT25
Spherical Washer
Two-piece concave/convex washer set that corrects for studs that are not square to the clamping surface.
Locating & Positioning
Locating keys, dowel pins, bushings and spring locating pins.
PT10
Locating Key
Hardened round locating key for aligning fixtures to machine table slots.
PT11
Threaded Dowel Pin
Hardened h6 dowel pin with an internal thread for easy extraction.
PT26
Locating Key (Stepped)
Stepped, ground locating key that adapts an 18 mm fixture keyway to 12–22 mm T-slots.
PT27
Locating Key (Straight)
Straight ground locating key that bolts to a fixture base to align it in the T-slot.
PT32
Shoulder Dowel Pin
Hardened stepped dowel pin with a ground shoulder and M5 extraction thread for multifunction positioning.
PT44
Positioning Bushing
Hardened, ground press-fit bushing for precise pin location in fixtures and pallets.
PT55
Spring Locating Pin (Steel Pin)
Press-in spring-loaded locating pin with a steel pin that pushes the workpiece against fixed locators.
PT56
Spring Locating Pin (POM Pin)
Press-in spring-loaded locating pin with a non-marring POM plastic pin for delicate workpieces.
PT58
Eccentric Liner
Eccentric bushing that lets you dial in the position of a spring locating pin.
PT59
Positioning Bushing (Flanged)
Hardened, ground flanged bushing for precise, repeatable pin location in fixtures and pallets.
Supports, Rests & Feet
Jack screws, swivel pads, rest tips, clamp rests and feet.
PT12
Jack Screw Tip
Hardened interchangeable support tips (V-groove, domed and cone) for jack screws.
PT28
Swivel Joint Support
Threaded clevis with pin and clamping ring; combine with a PT09 eyebolt for a swing clamp.
PT29
Swivel Pad
Self-aligning swivel foot that threads onto a stud to support uneven surfaces.
PT35
Swiveling Jack Screw (Serrated)
Adjustable jack screw with lock nut and serrated swivel head for supporting rough or sloped workpieces.
PT36
Swiveling Jack Screw (Smooth)
Adjustable jack screw with lock nut and smooth swivel head for supporting finished or sloped surfaces.
PT37
Swivel Rest Tip
Press-fit serrated swivel rest tip for fixture support points.
PT39
Clamp Rest
Threaded, height-adjustable heel rest with lock nut for strap clamps.
PT45
Feet (Flat End)
Hex-body threaded rest foot with a hardened flat contact face.
PT46
Feet (Serrated End)
Hex-body threaded rest foot with a serrated tooth plate for gripping rough parts.
Grippers & Pads
Serrated gripper nuts, gripper screws and square or round gripper pads.
PT13
Gripper Nut (Serrated End)
Threaded gripper nut with a hardened serrated tooth plate for supporting rough workpieces.
PT14
Gripper Nut (Flat End)
Threaded gripper nut with a flat contact face for supporting finished surfaces.
PT15
Gripper Nut (Round End)
Threaded gripper nut with a domed contact face for point support.
PT18
Gripper Screw (Set Screw Style)
Headless serrated gripper screw that threads into the fixture as a rough-part support or clamp point.
PT19
Gripper Screw (Hex Head)
Hex-head gripper screw with a serrated face for supporting and clamping rough parts.
PT20
Gripper Pad (Square)
Square serrated high-speed-steel gripper pad, screw-mounted to jaws and fixtures.
PT21
Gripper Pad (Round)
Round press-in gripper pad with a serrated tooth plate for fixture pockets.
Ball Rollers & Accessories
Ball rollers, protection plugs, threaded inserts and installation tools.
PT34
Protection Plug
Thread-in plugs in steel, PBT plastic or aluminum that keep chips and coolant out of unused fixture-plate holes.
PT43
Threaded Insert
Hardened threaded insert that adds a wear-resistant thread to fixture plates and soft materials.
PT47
Ball Roller (Hex Body)
Stainless threaded ball transfer unit with a hex body for sliding heavy parts and plates into position.
PT48
Ball Roller (Round Body)
Stainless threaded ball transfer unit with a round flanged body.
PT49
Ball Roller (Press-Fit)
Stainless press-fit ball transfer unit for flush mounting in fixture plates.
PT57
Installation Tool
Drive tool for pressing PT55 and PT56 spring locating pins squarely into their bores.