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The Series 20 Short Insert has the exact same body style as the Series 19 Short - with the addition of a head. The slightly tapered body is designed for use in straight holes to yield maximum performance with low radial stress. Seating and installation are facilitated with a pilot and a tapered knurl and groove design. The head provides more bearing surface for the mating component to prevent jack-out. The Series 20 Short Headed Insert is available in inch threads ranging from 2-56 up to ¼-20.

If you don’t see what you are looking for in our standard offering (including thread size, length, quantity, etc.), please feel free to contact SPIROL directly at or call any one of our global offices for complimentary Application Engineering assistance!

Unit of Measure

Supply Status

N/A Stocked

Units per Box

N/A 1

Thread Size

N/A 10-32

Overknurl Ø (A Ref.)

N/A .277 in

Head Ø (H)

N/A .310 in

Head Thickness (T)

N/A .040 in

Length (L)

N/A .250 in

Pilot Ø (P)

N/A .249 in

Rec. Hole Ø

N/A .252 in

Rec. Hole Ø Tolerance

N/A +.003/-.000 in

Material Type

N/A Brass

Material Grade

UNS C36000
EN 12164 CW603N CuZn36Pb3


N/A Plain

Weight Per Piece

N/A 0.0011316 kg0.0024947 lb