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Our line of Press-Thru (trade marked) spring and ball plungers have the same dimensions, spring pressures, and materials as our standard press fit product line.
Press-Thru™ Spring Plungers

Our line of Press-Thru (trade marked) spring and ball plungers have the same dimensions, spring pressures, and materials as our standard press fit product line.

Steel Hand Knobs
Product Information

Steel Hand Knobs

Smooth finish ensures hand comfort even after repeated use

Heat Treated Steel Black Oxide Finish


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Reamed & Tapped Knobs Have a Black Finish (Blank Knobs are Centered)
Type Blank Tapped Reamed Outside Dimensions
Type Part
No.		 Ref.
No.		 Lbs./
100		 Part
No.		 Thread
Size		 Thread
Depth		 Lbs./
100		 Part
No.		 Hole
Size		 Hole
Depth		 Lbs./
100		 A B C D
Star *17301 HK-1 7 17501 1/4-20 Thru 6 17401 1/4 Thru 6 1-1/8 9/16 5/8 5/16
Star       *17502 1/4-20 7/16 6 *17402 1/4 7/16 6 1-1/8 9/16 5/8 5/16
Star *17302 HK-2 12 17503 5/16-18 Thru 10 17403 5/16 Thru 10 1-1/2 11/16 7/8 3/8
Star       *17504 5/16-18 5/8 11 *17404 5/16 5/8 10 1-1/2 11/16 7/8 3/8
Star 17303 HK-3 22 17505 3/8-16 Thru 19 17405 3/8 Thru 19 2" 13/16 1" 1/2
Star *17304 HK-30 23 *17506 3/8-16 3/4 21 *17406 3/8 3/4 20 2" 13/16 1-1/8 1/2
Star 17305 HK-4 34 17507 1/2-13 Thru 30 17407 1/2 Thru 29 2-1/2 1" 1-1/8 9/16
Star *17306 HK-40 39 *17508 1/2-13 1" 35 *17408 1/2 1" 35 2-1/2 1" 1-1/2 9/16
Star       *17509 5/8-11 1" 33 *17409 5/8 1" 34 2-1/2 1" 1-1/2 9/16
Star 17307 HK-5 61 17510 5/8-11 Thru 54 17410 5/8 Thru 52 3" 1-1/4 1-1/4 5/8
Star *17308 HK-50 72 *17511 5/8-11 1-1/8 65 *17411 5/8 1-1/8 64 3" 1-1/4 1-3/4 5/8
Star       *17512 3/4-10 1-1/8 62 *17412 3/4 1-1/8 61 3" 1-1/4 1-3/4 5/8
Hexagon 17309 HK-6 38 17513 3/8-16 1-1/8 35 17413 3/8 1-1/8 35 2" 7/8 1-5/8 3/8
Hexagon 17310 HK-7 61 17514 1/2-13 1-1/8 57 17414 1/2 1-1/8 57 2-1/2 1" 1-7/8 7/16
Hexagon 17311 HK-8 97 17515 5/8-11 1-1/8 92 17415 5/8 1-1/8 91 3" 1-1/4 2" 1/2
Hexagon       17516 3/4-10 1-1/8 88 17416 3/4 1-1/8 87 3" 1-1/4 2" 1/2

* Conform to TCMAI Standards