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Home » Palnut® Capped Washer - Self-Threaders
 
Palnut® Capped Washer - Self-Threaders
Palnut® Capped Washer - Self-Threaders		 Palnut® Capped Washer - Self-Threaders

Non-Threaded Applications

Palnut self-threading nuts and Pushnut® fasteners are respectively turned on and pushed on non-threaded projections, or "studs". These fasteners eliminate the cost of cutting threads and the problems of cross-threading. They permit simpler, more economical and ultimately better designs.

With these fasteners, there is no thread to find and no binding from dirt or damaged threads. Because of their prevailing torque, the fasteners provide excellent vibration resistance.

Stud materials, which must be appreciably softer than that of the fasteners, include die cast zinc,aluminum, molded plastics, steel and brass.

 
Palnut® Capped Washer - Self-Threaders Palnut® Capped Washer - Self-Threaders

The Dimensions of the following parts are envelope dimensions only. For complete design information, please request a blueprint from your Tinnerman Palnut representative or the Tinnerman Palnut Engineering Department.
    Dimensions     Performance
 






Chrome-Plated
Zinc Die Cast Studs 		Steel
Studs
  Part Number Steel
Thick.
(In.)		 Hex Width
W (In.)		 Washer
Diam.
D(In.)		 Overall
Height
H (In.)		 Weight
Lbs./M		 Stud
Diameter
(In.)*		 Torque
In. Lbs.		 Tension
Lbs.		 Torque
In. Lbs.		 Tension
Lbs.
  SD125007 .017 5/16 7/16 .186 1.2 1/8 (.125) 15 90 26 130
  SD125085 .017 5/16 17/32 .194 1.5 1/8 (.125) 17 80 30 110
  SD188008 .018 3/8 1/2 .217 1.7 3/16 (.188) 38 210 50 330
  SD188010 .018 3/8 5/8 .235 2.3 3/16 (.188) 46 160 60 280
  SD250095 .021 7/16 19/32 .232 2.5 1/4 (.250) 65 260 95 370
  SD250011 .021 7/16 11/16 .247 3.1 1/4 (.250) 75 200 90 300
  SF312014 .023 .495 .875 .309 5.2 5/16 (.312) 115 300 165 450
  SG250095 .021 .432 .594 .219 2.2 .250 65 260 95 300
  SP330012 .023 1/2 3/4 .290 4.0 .330 See Foot Note Below
  SP330016 .023 1/2 1 .314 5.8 .330 See Foot Note Below
For studs with heavy plating (0.003"-0.005") nickel-chrome on die cast
zinc, the following styles are recommended.
  SH188010 .020 3/8 5/8 .244 2.7 3/16 (.188) 46 160 60 280
  SK125007 .020 5/16 7/16 .189 1.3 1/8 (.125) 15 90 26 130
  SK188008 .020 3/8 1/2 .211 1.7 3/16 (.188) 44 210 60 330
  SK188009 .020 3/8 9/16 .229 2.1 3/16 (.188) 46 180 60 300
  SK188010 .020 3/8 5/8 .239 2.4 3/16 (.188) 55 160 72 280

Note:
Parts SP330012 and SP30016 are only for use on tough plastic such as ABS or polypropylene for
which 45-50 in. lbs. torque develops approximate 100 lb. tension.

*At the tooth-engagement point when the fastener is seated, stud tolerance is + or - .003".
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