PRECISION BUSHINGS

Used In Stevens Fixturing & In Fixtures Which Must Be Compatible With Stevens Fixturing.

• Ground to I.D. tolerance of +/- .000050”, concentricity .0001” TIR.

• Case hardened to 60Rc.
• Installation of Bushings:  For bushing hole preparation, bore to diameter and depth specifications. Bushings should be retained in place with Loctite 609 or equivalent. Bored hole location tolerance should be held to +/- .00015” (.0003” span tolerance) for satisfactory results.

SPAN-COMP BUSHINGS

• Inside diameter is elongated to permit doweling a fixture to any Stevens pattern. Bushing location errors up to +/- .005” are possible without diminishing accuracy.
• When building or adapting a fixture, use one standard bushing and one Span Comp Bushing with the marker slots aligned as shown.
• Materials such as aluminum with high thermal expansion rates, can be used with steel table fixturing.
• Eliminates any requirement for diamond pins to mount fixtures onto primary table fixturing.

CHIP PLUGS - THREADED HOLE

• Keeps chips and dirt out of unused threaded holes, making tooling easier to work with.
• Screwdriver slot won’t pack with chips like socket set screws.
• Material: Mild steel with black oxide coating.

CHIP PLUGS - BUSHED HOLE

• Three piece assembly: brass body, Viton o-ring, and a slotted set screw.
• Insert with thumb pressure. To remove, screw the slotted set screw down out of the way and use the Pull Dowel Extractor to pull out the Chip Plug.

PRECISION PULL DOWELS

Used To Locate Accessories On Stevens Primary Table Tooling.

• Ground to diameter tolerance of +/- .000050”
• Case hardened to 60Rc.
• Threaded hole in both ends accepts Pull Dowel Extractor.

PULL DOWEL EXTRACTORS

Used To Insert & Remove Stevens Pull Dowels & Other Components.

• Threaded end enters threaded holes on Pull Dowel.
• Sliding handle allows tapping action for easy Pull Dowel removal or insertion.
• Material: Stainless steel.

EXTRACTORS EXTENSIONS

Used With Certain Accessories Which Require Long Reach Access To Pull Dowels.

LOCKING PULL DOWEL

Used Where Gravity Or Vibration Could Cause Pull Dowels  To Fall Out.

• Locking collet mechanism secures dowel in bushing using an Allen wrench.
• Spanner Wrench prevents rotation while locking collet with Allen wrench.

SPANNER WRENCHES

Used With Locking Pull Dowels To Hold While Tightening.