Die Bushings

Catalog
Number
N = Shape No.
B = Body Style
7 = Bushing
M = Material 
Body
Dia.
Headless
Min.
Land
Head
Dia.
Max.
Relief
R
p P W
Min. Max. Min. Max. Min. Max.
NB7M-20 .2508 5/32 3/8 DEPENDS
UPON
SHAPE
OR
FORM
.065 .150
NB7M-25 .3133 5/32 7/16 .095 .200 .095 .160 .065 .110
NB7M-30 .3759 3/16 1/2 .110 .260 .045 .230 .065 .130
NB7M-35 .4384 3/16 9/16 .125 .290 .130 .290 .095 .160
NB7M-40 .5010 3/16 5/8 .140 .330 .078 .220 .060 .190
NB7M-50 .6261 7/32 3/4 .155 .410 .140 .360 .110 .270
NB7M-60 .7513 7/32 7/8 .180 .540 .140 .430 .126 .400
NB7M-70 .8763 1/4 1 .260 .640 .190 .545 .140 .500
NB7M-80 1.0013 1/4 1 – 1/8 .320 .765 .200 .650 .140 .600
NB7M-100 1.2514 5/16 1 – 3/8 .440 .890 .250 .810 .170 .775
NB7M-120 1.5015 5/16 1 – 5/8 .620 1.020 .312 1.063 .200 1.050

 

Catalog
Number
N = Shape No.
B = Body Style
7 = Bushing
M = Material
P
Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max.
NB7M-20
NB7M-25 .065 .140 .065 .120 .065 .130 .065 .160 .095 .160 .065 .110
NB7M-30 .065 .190 .065 .120 .065 .160 .065 .195 .095 .230 .065 .130
NB7M-35 .095 .290 .095 .230 .095 .200 .095 .245 .130 .290 .095 .160
NB7M-40 .100 .166 .064 .102 .062 .162 .060 .200 .090 .220 .140 .230
NB7M-50 .120 .302 .125 .166 .125 .244 .125 .250 .100 .250 .150 .290
NB7M-60 .126 .402 .125 .166 .125 .307 .200 .350 .150 .390 .200 .400
NB7M-70 .126 .506 .125 .200 .125 .385 .250 .450 .200 .515 .250 .535
NB7M-80 .157 .597 .125 .275 .187 .464 .300 .560 .250 .600 .310 .650
NB7M-100 .188 .669 .187 .400 .308 .575 .400 .700 .300 .750 .390 .760
NB7M-120 .221 .994 .220 .525 .375 .752 .500 .875 .300 1.000 .350 1.060

 

Illustrations above show headless bushings. Dimensions for head diameters for headed bushings are shown in the table. Dimensions are the same for ball lock bushings.

Ball lock bushings 3/8″ body and smaller are shown with light-duty dimensions. 1/2″ and larger bodies are shown with heavy-duty dimensions.

Standard bushings lengths are from 3/4″ to 1-3/4″ in 1/4″ increments.

NOTE! BODY DIAMETERS FOR HEAD TYPE DIE BUSHINGS ARE AS FOLLOWS:

20 25 30 35 40 50 60 70 80 100 120
.2503 .3128 .3753 .4378 .5003 .6253 .7503 .8753 1.0003 1.2503 1.5003

 

 

Catalog Numbers
N B   M
Shape Body Style Description Material
#1 – Round #1 – Headless #7 – Bushing #1 – A2 Steel
#2 – Oblong #2 – Button Head #2 – M2 Steel
#3 – Rectangle #3 – Light BL
#4 – Square #4 – Heavy BL
#5 – Hex
#6 – Flatted Head

Round hole dies are furnished with round counterbored relief. Shaped dies have taper  relief and the dimensions are proportional to the “P” and “W” dimensions and the bushing “L” dimension.

When ordering ball lock bushings, be sure to specify location of the ball seat relative to the shape.

When ordering punches and dies, we prefer that exact point dimensions be specified with tolerances rather than specifying only a clearance between the punch point and the die button hole. We do not take responsibility for computing proper die clearance for various materials and thicknesses.

Hardened Bushing Blanks with Wire hole are available.

NOTE! TAPER RELIEF ON BUTTONS WILL BE 1/2º PER SIDE