ANSI and National  Standard Bushings
Slip/Fixed Renewable
   
Type SF
All type "SF" bushings have lapped, honed or ground I.D.'s. 
Bushings with I.D.'s up to 1.0" are concentric to .0003" max.
T. I. R. to the O.D.  Larger sizes are concentric to .0005" T.I.R.
to the O.D.  Clearance is provided for proper slip fit alignment
when inserted into a liner.
National bushings are not counterbored.
             A   B C                    Head Size   Lockscrew
Standard ID Sizes Range in Body O.D. Length ANSI Price Head Lockscrew and
Number, Letter, Or Fraction Sizes Inches Nominal (Actual) (Overall) Symbol Type "P"  Code ** Dia. Location Clamp
  .0135     1/4   SF-12-4 271    
80, 79, 1/64, 78, 77, 76, 75, 74 to   3/16   5/16   SF-12-5 274 F = 5/16 H  =  3/32 #1-LS
73, 72, 71, 70 .0280 (.1875 / .1873)   3/8   SF-12-6 278 G = 3/16 J  =  3/32  
        1/2   SF-12-8 280   R  =  17/64  
        1/4   SF-12-4 244    
69, 68, 1/32, 67, 66, 65, 64, 63, .0292   3/16   5/16   SF-12-5 246 F = 5/16 H  =  3/32 #1-LS
62, 61, 60, 59, 58, 57, 56, 3/64 to (.1875 / .1873)   3/8   SF-12-6 249 G = 3/16 J  =  3/32  
  .0469   1/2   SF-12-8 251 R  =  17/64  
        1/4   SF-12-4 215      
  .0520   3/16   5/16   SF-12-5 217 F = 5/16 H  =  3/32 #1-LS
55, 54, 53 to (.1875 / .1873)   3/8   SF-12-6 219 G = 3/16 J  =  3/32  
  .0595   1/2   SF-12-8 222 R  =  17/64  
        1/4   SF-12-4 154      
1/16, 52, 51, 50, 49, 48, 5/64, .0625   3/16   5/16   SF-12-5 156 F = 5/16 H  =  3/32 #1-LS
47, 46, 45, 44, 43, 42, 3/32, 41, to (.1875 / .1873)   3/8   SF-12-6 158 G = 3/16 J  =  3/32  
40 .0980   1/2   SF-12-8 161 R  =  17/64  
        3/4   SF-12-12 172    
        1/4   SF-16-4 147      
39, 38, 37, 36, 7/64, 35, 34, 33, .0995   1/4   3/8   SF-16-6 153 F = 7/16 H  =  1/8 #2-LS
32, 31, 1/8, 30, 29, 28 to (.2500 / .2498)   1/2   SF-16-8 156 G = 1/4 J  =  9/64  
  .1405   5/8   SF-16-10 161 R  =  23/64  
        3/4   SF-16-12 163      
        5/16   SF-20-5 204    
3/64, 55, 54, 53 .0469   5/16   3/8   SF-20-6 208 F = 35/64 H  =  1/8 1A - LS
  to (.3125 / .3123)   1/2   SF-20-8 209 G = 1/4 J  =  11/64  
  .0595   3/4   SF-20-12 251 R  =  1/2 RC - 1A
      1   SF-20-16 274    
        5/16   SF-20-5 158      
1/16, 52, 51, 50, 49, 48, 5/64, .0625   5/16   3/8   SF-20-6 160 F = 35/64 H  =  1/8 1A - LS
47, 46, 45, 44, 43 to (.3125 / .3123)   1/2   SF-20-8 164 G = 1/4 J  =  11/64  
  .0890   3/4   SF-20-12 182 R  =  1/2 RC - 1A
      1   SF-20-16 206      
42, 3/32, 41, 40, 39, 38, 37, 36,       5/16   SF-20-5 150    
7/64, 35, 34, 33, 32, 31, 1/8, 30, .0935   5/16   3/8   SF-20-6 153 F = 35/64 H  =  1/8 1A - LS
29, 28, 9/64, 27, 26, 25, 24, 23, to (.3125 / .3123)   1/2   SF-20-8 156 G = 1/4 J  =  11/64  
5/32, 22, 21, 20, 19, 18, 11/64, .1935   3/4   SF-20-12 164    
17, 16, 15, 14, 13, 3/16, 12, 11,   1   SF-20-16 178 R  =  1/2 RC - 1A
12, 11, 10     1-3/8   SF-20-22 205      
        1/4   SF-24-4 134    
10, 9, 8, 7, 13/64, 6, 5, 4, 3, .1935   3/8   3/8   SF-24-6 138 F = 5/8 H  =  1/8  
7/32, 2, 1 to (.3750 / .3748)   1/2   SF-24-8 140 G = 1/4 J  =  15/64 #2-LS
  .2280   3/4   SF-24-12 146 R  =  29/64  
      1   SF-24-16 153      
                   ** Price Code - See Separate Net Price Schedule
 
14               National Bushing & Manufacturing Corp., 1936 Raymond Dr., Northbrook, IL 60062
 
ANSI and National  Standard Bushings
Slip/Fixed Renewable
   
Type SF
I.D. Range     Standard I.D. Tolerance
(Drill Size)          (add to nominal I.D.)
#80 to 1/4             +.0001 to +.0004
Over 1/4 to 3/4             +.0001 to +.0005
Over 3/4 to 1-1/2             +.0002 to +.0006
Over 1-1/2 to 2-3/4             +.0003 to +.0007
             A   B C                    Head Size   Lockscrew
   Standard ID Sizes Range in Body O.D. Length ANSI Price Head Lockscrew and
Number, Letter, Or Fraction Sizes Inches Nominal (Actual) (Overall) Symbol Type "P"  Code ** Dia. Location Clamp
  .2344     3/8   SF-28-6 138    
15/64, 1/4, 17/64, 9/32 to   7/16   1/2   SF-28-8 140 F = 5/8 H  =  1/8  
  .2812 (.4375 / .4373)   3/4   SF-28-12 146 G = 1/4 J  =  15/64 #2-LS
      1   SF-28-16 153   R  =  29/64  
        5/16   SF-32-5 140    
9/64, 27, 26, 25, 24, 23, 5/32, .1406   1/2   3/8   SF-32-6 143 F = 51/64 H  =  1/8 1A - LS
22, 21, 20, 19, 18, 11/64, 17, to (.5000 / .4998)   1/2   SF-32-8 145 G = 1/4 J  =  19/64  
16, 15, 14, 13, 3/16 .1875   3/4   SF-32-12 150 R  =  5/8 RC - 1A
    1   SF-32-16 160      
    1-3/8   SF-32-22 170    
      1-3/4   SF-32-28 182      
        5/16   SF-32-5 137    
12, 11, 10, 9, 8, 7, 13/64, 6, 5, 4,     3/8   SF-32-6 138   1A - LS
3, 7/32, 2, 1, A, 15/64, B, C, D, .1890   1/2   1/2   SF-32-8 140 F = 51/64 H  =  1/8  
1/4, F, G, 17/64, H, I, J, K, 9/32, to (.5000 / .4998)   3/4   SF-32-12 146 G = 1/4 J  =  19/64 RC - 1A
L, M, 19/64, N 5/16, O, P, 21/64, .3438   1   SF-32-16 153   R  =  5/8  
Q, R, 11/32   1-3/8   SF-32-22 165    
    1-3/4   SF-32-28 177    
      2-1/8   SF-32-34 245      
  .3125   1/2   SF-36-8 140 H  =  1/8  
5/16, O, P, 21/64, Q, R, 11/32 to   9/16   5/8   SF-36-10 143 F = 7/8 J  =  23/64 #2-LS
  .3438 (.5625 / .5623)   3/4   SF-36-12 146 G = 1/4 R  =  37/64  
      1   SF-36-16 153      
        5/16   SF-40-5 137    
      3/8   SF-40-6 138    
23/64, U, 3/8, V, W, 25/64, X, Y, .3594   5/8   1/2   SF-40-8 140 F = 7/8 H  =  1/8 #2-LS
13/32, Z, 27/64, 7/16 to (.6250 / .6248)   5/8   SF-40-10 142 G = 1/4 J  =  23/64  
  .4375     3/4   SF-40-12 144 R  =  37/64  
    1   SF-40-16 150    
      1-1/4   SF-40-20 165      
        1/2   SF-48-8 140    
9/32, L, M, 19/64, N, 5/16, O, P,     3/4   SF-48-12 144 H  =  1/8 1A-LS
21/64, Q, R, 11/32, S, T, 23/64, .2812   3/4 1   SF-48-16 150 F =1-3/64 J  =  27/64  
27/64, 7/16, 29/64, 15/32, 31/64, to (.7500 / .7498) 1-3/8   SF-48-22 165 G = 1/4 R  =  3/4 RC-1A
1/2, 33/64, 17/32, 35/64, 9/16 .5625   1-3/4   SF-48-28 180      
    2-1/8   SF-48-34 194    
    2-1/2   SF-48-48 260    
      3   SF-48-48 312      
Body "K" "N" Use
"SF" bushings are available milled O.D.     Clamp
for flat clamps.  To order add the 5/16 11/64 11/16 FC-1
the letters "FM"  before the part 1/2 17/64 25/32 FC-1
 number.(FM-SF-48-12) 3/4 25/64 57/64 FC-1
1 1/2 1-9/64 FC-2
1-3/8 11/16 1-21/64 FC-2
1-3/4 7/8 1-33/64 FC-3
2-1/4 1-1/8 1-49/64 FC-3
** Price Code - See Separate Net Price Schedule
 
15
 
ANSI and National  Standard Bushings
Slip/Fixed Renewable
   
Type SF
All type "SF" bushings have lapped, honed or ground I.D.'s. 
Bushings with I.D.'s up to 1.0" are concentric to .0003" max.
T. I. R. to the O.D.  Larger sizes are concentric to .0005" T.I.R.
to the O.D.  Clearance is provided for proper slip fit alignment
when inserted into a liner.
National bushings are not counterbored.
             A   B C                    Head Size   Lockscrew
              Standard ID Sizes Range in Body O.D. Length ANSI Price Head Lockscrew and
Number, Letter, Or Fraction Sizes Inches Nominal (Actual) (Overall) Symbol Type "P"  Code ** Dia. Location Clamp
        1/2   SF-56-4 146    
35/64, 9/16, 37/64, 19/32, 0.5469   7/8   3/4   SF-56-12 150 F = 1-1/4 H  =  3/16 2A-LS
39/64, 5/8, 41/64, 21/32 to (.8750 / .8748) 1   SF-56-16 156 G = 3/8 J  =  31/64  
  .6562   1-1/4   SF-56-20 163 R  =  53/64 RC-2A
      1-1/2   SF-56-24 175      
        1/2   SF-64-8 146    
15/32, 31/64, 1/2, 33/64, 17/32,     3/4   SF-64-12 151      
35/64, 9/16, 37/64, 19/32, 39/64,   1   SF-64-16 156      
5/8, 41/64, 21/32, 43/64, 11/16, .4688 1" 1-3/8   SF-64-22 164 F = 1-27/64 H  =  3/16 2A-LS
45/64, 23/32, 47/64, 3/4, 49/64, to (1.0000 / 1.9998) 1-1/2   SF-64-24 175 G = 3/8 J  =  19/32  
25/32 .7812   1-3/4   SF-64-28 187 R  =  59/64 RC-2A
      2-1/8   SF-64-34 205    
    2-1/2   SF-64-40 272    
      3   SF-64-48 316      
  .8750   3/4   SF-80-12 188 F = 1-5/8 H  =  3/32  
7/8 &15/16 & 1-1/4 1   SF-80-16 200 G = 3/8 J  =  43/64 2A-LS
  .9375 (1.2500 / 1.2498) 1-1/4   SF-80-20 210 R  =  1-1/64 RC-2A
      2   SF-80-32 254    
        3/4   SF-88-12 182      
    1   SF-88-88 193      
3/4, 49/64, 25/32, 51/64, 13/16,   1-3/8   SF-88-22 204 F = 1-51/64 H  =  3/16 2A-LS
53/64, 27/32, 55/64, 7/8, 57/64, .7500 1-3/8 1-1/2   SF-88-24 213 G = 3/8 J  =  25/32  
29/32, 59/64, 15/16, 61/64, to (1.3750 / 1.3747) 1-3/4   SF-88-28 223 R  =  1-7/64 RC-2A
31/32, 63/64, 1", 1-1/64, 1-1/32 1.0625   2-1/8   SF-88-34 245    
1-3/64, 1-1/16     2-1/2   SF-88-40 288    
      3   SF-88-48 325    
1", 1-1/64, 1-1/32, 1-3/64,       3/4   SF-112-12 238      
1-1/16, 1-5/64, 1-3/32, 1-7/64,   1   SF-112-16 220      
1-1/8, 1-9/64, 1-5/32, 1-11/64,   1-3/8   SF-112-22 235 F = 2-19/64 H  =  3/16 3A-LS
1-3/16, 1-13/64, 1-7/32, 1-15/64, 1.0000 1-3/4 1-3/4   SF-112-28 251 G = 3/8 J  =  1"  
1-1/4, 1-17/64, 1-9/32, 1-19/64, to (1.7500 / 1.7497) 2-1/8   SF-112-34 273 R  =  1-25/64 RC-3A
1-15/16, 1-21/64, 1-11/32, 1.3750   2-1/2   SF-112-40 306    
1-23/64, 1-3/8     3   SF-112-48 331      
1-3/8, 1-25/64, 1-13/32, 1-27/64   1   SF-144-16 263      
1-7/16, 1-29/64, 1-15/32, 1.3750 2-1/4 1-3/8   SF-144-22 279 F = 2-51/64 H  =  3/16 3A-LS
1-31/64, 1-1/2, 1-33/64, 1-17/32, to (2.2500 / 2.2496) 1-3/4   SF-144-28 294 G = 3/8 J  =  1-1/4  
1-35/64, 1-9/16, 1-37/64, 1.7500 2-1/8   SF-144-34 313 R  =  1-41/64 RC-3A
1-19/32, 1-39/64, 1-5/8, 1-41/64,   2-1/2   SF-144-40 325    
1-21/32,1-43/64, 1-11/16,     3   SF-144-48 336    
1-45/64, 1-23/32, 1-47/64, 1-3/4                
For I.D Tolerance and Milled Flat bushing information please refer to page 15.
 ** Price Code - See Separate Net Price Schedule
 
16               National Bushing & Manufacturing Corp., 1936 Raymond Dr., Northbrook, IL 60062