Brownells Brownells Brownells 75th Anniversary - A Shooting Heritage

K-Frame 12-4

Schematic ID# 576

Click on a red number to view more information on that item and to add that factory part to your shopping cart. Select "SKU Listing" to see all stock numbers for this schematic.

View All Available SKUs View All Factory Discontinued Items
#3
215320000 BOLT
940-215-320WB
Bolt

Mfr Part: 215320000

SMITH & WESSON

$23.38

Out of Stock

FITS: K Frame - Common Parts, .38

#4
070980000 BOLT PLUNGER
940-070-980WB
Bolt Plunger

Mfr Part: 070980000

SMITH & WESSON

$1.99

In Stock

FITS: 31, .32; 32, .32; 34, .22; 36, .38; 37, .38; 38, .38; 42/442, .38; 49, .38; 60, .38, .357; 63, .22; 317, .22; 331TI, .32 Mag; 332TI, .32 Mag; 337TI, .38; 342TI, .38; 631/631 LS, .32 Mag; 632, .32 Mag; 637, .38; 638, .38; 640, .38; 640

#5
070200000 BOLT PLUNGER SPRING/SEAR SPR
940-070-200WB
Bolt Plunger/Sear Spring

Mfr Part: 070200000

SMITH & WESSON

$1.99

Out of Stock

FITS: 31, .32; 32, .32; 34, .22; 36, .38; 37, .38; 38, .38; 42/442, .38; 49, .38; 60, .38, .357; 63, .22; 317, .22; 331TI, .32 Mag; 332TI, .32 Mag; 337TI, .38; 342TI, .38; 631/631 LS, .32 Mag; 632, .32 Mag; 637, .38; 638, .38; 640, .38; 640

#6
049880000 CENTER PIN, 2  BARREL, BLUE
940-049-880WB
Center Pin, 2" Barrel, Blue

Mfr Part: 049880000

SMITH & WESSON

$8.86

Out of Stock

FITS: 12-4, .38

#6
074690000 CENTER PIN,2" BBL,S/S
940-074-690WB
Center Pin, 2" Barrel, SS

Mfr Part: 074690000

SMITH & WESSON

$8.99

In Stock

FITS: K Frame - Common Parts, .38

#6
074720000 CENTER PIN, BARREL OVER 2
940-074-720WB
Center Pin, Over 2-1/2" Barrel, SS

Mfr Part: 074720000

SMITH & WESSON

$9.99

Out of Stock

FITS: 10, .38; 12-4, .38; 13-3, .357; 14, .38; 15-4, .38; 16, .32 Mag; 17-7, .22; 18-4, .22; 19, .357; 64-3, .38; 65/65LS, .357; 66, .357; 67, .38; 617-1, .22; 648-1, .22 Mag; 581, .357; 586, .357; 681, .357; 686, .357; 696, .44 Spl

#8
226360000 CYL. ASSBLY (NEW STYLE) BLUE
940-260-080WB
Cylinder Assembly, Blue, New Style

Mfr Part: 226360000

SMITH & WESSON

$146.99

Out of Stock

FITS: 10, .38; 12-4, .38; 14, .38; 15-4, .38

#8
413890000 CYL. ASSLY, (NEW STYLE) S/S
940-260-230WB
Cylinder Assembly, New Style

Mfr Part: 413890000

SMITH & WESSON

$123.64

In Stock

FITS: K Frame - Common Parts, .38; 64-2, .38; 67, .38

#9
070550000 CYLINDER STOP SPRING
940-070-550WB
Cylinder Stop Spring

Mfr Part: 070550000

SMITH & WESSON

$1.51

In Stock

FITS: K Frame - Common Parts, .38; 581, .357; 586, .357; 681, .357; 686, .357; 696, .44 Spl; 24, .44 Spl; 25-2, .45 ACP; 25-5, .45 LC; 27-4, .357; 28, .357; 57-1, .41 Mag; 624, .44 Spl; 625, .45 ACP; 627, .357; 657, .41 Mag

#10
215080000 CYLINDER STOP, MIM
940-215-080WB
Cylinder Stop, MIM

Mfr Part: 215080000

SMITH & WESSON

$14.99

Out of Stock

FITS: K Frame - Common Parts, .38; 581, .357; 586, .357; 681, .357; 686, .357; 696, .44 Spl; 24, .44 Spl; 25-2, .45 ACP; 25-5, .45 LC; 27-4, .357; 28, .357; 29-3, .44 Mag; 57-1, .41 Mag; 610, .10mm; 624, .44 Spl; 625, .45 ACP, .45 LC; 627,;

#15
05454B000 EXTRACTOR ROD, 2" BBL, BLUE
940-054-541WB
Extractor Rod, 2" Barrel, Blue

Mfr Part: 05454B000

SMITH & WESSON

$8.99

Out of Stock

FITS: 10, .38; 12-4, .38

#15
072330000 EXTRACTOR ROD, 2" S/S
940-072-330WB
Extractor Rod, 2" Barrel, SS

Mfr Part: 072330000

SMITH & WESSON

$4.99

Out of Stock

FITS: K Frame - Common Parts, .38

#15
05455B000 EXTRACTOR ROD,BBL OVR 2 ,BL
940-054-551WB
Extractor Rod, Over 2" Barrel, Blue

Mfr Part: 05455B000

SMITH & WESSON

$9.99

Out of Stock

FITS: 10, .38; 12-4, .38; 13-3, .357; 14, .38; 15-4, .38; 16, .32 Mag; 17-4, .22; 18-4, .22; 19, .357; 581, .357; 586, .357

#16
076850000 EXTRACTOR ROD COLLAR
940-076-850WB
Extractor Rod Collar

Mfr Part: 076850000

SMITH & WESSON

$3.99

In Stock

FITS: K Frame - Common Parts, .38; 581, .357; 586, .357; 681, .357; 686, .357; 696, .44 Spl

#17
075940000 EXTRACTOR SPRING
940-075-940WB
Extractor Spring

Mfr Part: 075940000

SMITH & WESSON

$1.99

In Stock

FITS: K Frame - Common Parts, .38; 581, .357; 586, .357; 681, .357; 686, .357; 696, .44 Spl; 24, .44 Spl; 25-2, .45 ACP; 25-5, .45 LC; 27-4, .357; 28, .357; 29-3, .44 Mag; 57-1, .41 Mag; 610, .10mm; 624, .44 Spl; 625, .45 LC; 627, .357; 629

#18
213850000 EXTRACTOR (NEW STYLE) S/S
940-213-850WB
Extractor, New Style, SS

Mfr Part: 213850000

SMITH & WESSON

$33.99

Out of Stock

FITS: K Frame - Common Parts, .38

#28
070110000 HAND PIN
940-000-194WB
Hand Pin

Mfr Part: 070110000

SMITH & WESSON

$1.99

Out of Stock

FITS: K Frame - Common Parts, .38; 581, .357; 586, .357; 681, .357; 686, .357; 696, .44 Spl; 24, .44 Spl; 25-2, .45 ACP; 25-5, .45 LC; 27-4, .357; 28, .357; 610, .10mm; 624, .44 Spl; 625, .45 ACP, .45 LC; 627, .357; 629, .44 Mag; 657, .41 M

#29
070400000 HAND TORSION SPRING
940-070-400WB
Hand Torsion Spring

Mfr Part: 070400000

SMITH & WESSON

$1.61

Out of Stock

FITS: K Frame - Common Parts, .38; 581, .357; 586, .357; 681, .357; 686, .357; 696, .44 Spl; 24, .44 Spl; 25-2, .45 ACP; 25-5, .45 LC; 27-4, .357; 28, .357; 29-3, .44 Mag; 57-1, .41 Mag; 610, .10mm; 624, .44 Spl; 625, .45 ACP, .45 LC; 627,;

#30
210640000 HAND
940-210-640WB
Hand

Mfr Part: 210640000

SMITH & WESSON

$15.99

Out of Stock

FITS: 67-2, .38; 10, .38; 12-4, .38; 13-3, .357; 14, .38; 15-4, .38; 16, .32 Mag; 17-6, .22; 18-4, .22; 19-6, .357; 64-4, .38; 65/65LS-5, .357; 66-3, .357; 617-0, .22; 648, .22 Mag

#30
210650000 HAND, OVERSIZE
940-210-650WB
Hand, Oversize

Mfr Part: 210650000

SMITH & WESSON

$13.99

Out of Stock

FITS: K Frame - Common Parts, .38

#31
213950000 LOCKING BOLT
940-213-950WB
Locking Bolt

Mfr Part: 213950000

SMITH & WESSON

$6.99

Out of Stock

FITS: 31, .32; 32, .32; 34, .22; 36, .38; 37, .38; 38, .38; 42/442, .38; 49, .38; 60, .38, .357; 63, .22; 317, .22; 331TI, .32 Mag; 332TI, .32 Mag; 337TI, .38; 342TI, .38; 631/631 LS, .32 Mag; 632, .32 Mag; 637, .38; 638, .38; 640, .38; 640

#32
072530000 LOCKING BLT PIN,BBL OVR 2 SS
940-072-530WB
Locking Bolt Pin, Over 2" Barrel, SS

Mfr Part: 072530000

SMITH & WESSON

$1.93

Out of Stock

FITS: K Frame - Common Parts, .38

#32
05044B000 LCKNG BLT PIN BBLS UNDR 5"BL
940-050-440WB
Locking Bolt Pin, Under 5" Barrel, Blue

Mfr Part: 05044B000

SMITH & WESSON

$0.99

Out of Stock

FITS: 31, .32; 32, .32; 34, .22; 36, .38; 37, .38; 38, .38; 42/442, .38; 49, .38; 10, .38; 12-4, .38; 15-4, .38; 17-4, .22; 18-4, .22

#33
070140000 LOCKING BOLT SPRING
940-070-140WB
Locking Bolt Spring

Mfr Part: 070140000

SMITH & WESSON

$1.40

In Stock

FITS: 52 R2, .38 Spl; M52-2, 38 SPL; 31, .32; 32, .32; 34, .22; 36, .38; 37, .38; 38, .38; 42/442, .38; 49, .38; 60, .38, .357; 63, .22; 317, .22; 331TI, .32 Mag; 332TI, .32 Mag; 337TI, .38; 342TI, .38; 631/631 LS, .32 Mag; 632, .32 Mag; 63

#34
050470000 MAINSPRING
940-050-470WB
Mainspring

Mfr Part: 050470000

SMITH & WESSON

$5.99

In Stock

FITS: K Frame - Common Parts, .38; 581, .357; 586, .357; 681, .357; 686, .357; 696, .44 Spl; 24, .44 Spl; 25-2, .45 ACP; 25-5, .45 LC; 27-4, .357; 28, .357; 29-3, .44 Mag; 57-1, .41 Mag; 610, .10mm; 624, .44 Spl; 625, .45 ACP; 627, .357; 62

#35
03091B000 SIDEPLATE SCREW FLAT HD BLUE
940-030-910WB
Side Plate Screw, Flat Head, Blue

Mfr Part: 03091B000

SMITH & WESSON

$3.99

In Stock

FITS: 31, .32; 34, .22; 36, .38; 37, .38; 38, .38; 49, .38; 10, .38; 12-4, .38; 13-3, .357; 14, .38; 15-4, .38; 16, .32 Mag; 17-4, .22; 18-4, .22; 19, .357; 581, .357; 586, .357; 586-3, .357; 24, .44 Spl; 25-2, .45 ACP; 25-5, .45 LC; 27-4,;

#35
216490000 SIDEPLATE SCREW, GLASS BEAD
940-000-254WB
Side Plate Screw, Glass Beaded

Mfr Part: 216490000

SMITH & WESSON

$3.19

Out of Stock

FITS: 60-3, .38, .357; 317, .22; 331TI, .32 Mag; 332TI, .32 Mag; 337TI, .38; 342TI, .38; 637-1, .38; 642-1, .38; K Frame - Common Parts, .38; 625, .45 ACP; 629, .44 Mag

#44
216170000 REBOUND SLIDE ASSEMBLY
940-070-340WB
Rebound Slide Assembly

Mfr Part: 216170000

SMITH & WESSON

$16.99

In Stock

FITS: K Frame - Common Parts, .38; 581, .357; 586, .357; 681, .357; 686, .357; 696, .44 Spl; 24, .44 Spl; 25-2, .45 ACP; 25-5, .45 LC; 27-4, .357; 28, .357; 29-3, .44 Mag; 57-1, .41 Mag; 610, 10mm; 624, .44 Spl; 625, .45 ACP, .45 LC; 627, .

070320000 REBOUND SLIDE PIN
940-000-197WB
Rebound Slide Pin

Mfr Part: 070320000

SMITH & WESSON

Discontinued by the Factory

Product has been discontinued and no longer available.

#46
070280000 REBOUND SLIDE SPRING
940-070-280WB
Rebound Slide Spring

Mfr Part: 070280000

SMITH & WESSON

$1.99

Out of Stock

FITS: 649-3, .357; K Frame - Common Parts, .38; 581, .357; 586, .357; 681, .357; 686, .357; 696, .44 Spl; 24, .44 Spl; 25-5, .45 LC; 27-4, .357; 28, .357; 29-3, .44 Mag; 57-1, .41 Mag; 610, .10mm; 624, .44 Spl; 625, .45 ACP, .45 LC; 627, .3

#47
078530000 REBOUND/CYL SLIDE/STOP STUD
940-000-253WB
Rebound Slide/Cylinder Stop Stud

Mfr Part: 078530000

SMITH & WESSON

$2.80

Out of Stock

FITS: K Frame - Common Parts, .38; 681, .357; 686, .357; 696, .44 Spl; 610, .10mm; 624, .44 Spl; 625, .45 ACP, .45 LC; 627, .357; 629, .44 Mag; 657, .41 Mag

#49
218800000 SEAR/STIRRUP PIN
940-070-190WB
Sear/Stirrup/Hand Spring Pin

Mfr Part: 218800000

SMITH & WESSON

$1.99

In Stock

FITS: K Frame - Common Parts, .38; 581, .357; 586, .357; 681, .357; 686, .357; 696, .44 Spl; 24, .44 Spl; 25-2, .45 ACP; 25-5, .45 LC; 27-4, .357; 28, .357; 29-3, .44 Mag; 57-1, .41 Mag; 610, .10mm; 624, .44 Spl; 625, .45 ACP, .45 LC; 627,;

#50
077910000 STIRRUP
940-077-910WB
Stirrup

Mfr Part: 077910000

SMITH & WESSON

$4.99

Out of Stock

FITS: K Frame - Common Parts, .38; 581, .357; 586, .357; 681, .357; 686, .357; 696, .44 Spl; 24, .44 Spl; 25-2, .45 ACP; 25-5, .45 LC; 27-4, .357; 28, .357; 29-3, .44 Mag; 57-1, .41 Mag; 610, .10mm; 624, .44 Spl; 625, .45 ACP, .45 LC; 627,;

#51
070220000 STOCK PIN
940-070-220WB
Stock Pin

Mfr Part: 070220000

SMITH & WESSON

$1.62

Out of Stock

FITS: 31, .32; 32, .32; 34, .22; 36, .38; 42/442, .38; 49, .38; 60, .38, .357; 63, .22; 317, .22; 631/631 LS, .32 Mag; 637-1, .38; 638-2, .38; 640, .38; 640 Magnum, .357; 642-1, .38; 649, .38, .357; 650/651, .22 Mag; 940, 9mm; K Frame - Com

#53
05035B000 STRAIN SCREW, RD BUTT, BLUE
940-050-350WB
Strain Screw, Round Butt, Blue

Mfr Part: 05035B000

SMITH & WESSON

$3.88

In Stock

FITS: 10, .38; 12-4, .38; 13-3, .357; 17-8, .22; 19, .357

#53
072280000 STRAIN SCREW,RND BUTT, S/S
940-072-280WB
Strain Screw, Round Butt, SS

Mfr Part: 072280000

SMITH & WESSON

$3.29

Out of Stock

FITS: K Frame - Common Parts, .38; 686, .357; 696, .44 Spl

#54
05071B000 THUMBPIECE NUT, BLUE
940-050-710WB
Thumbpiece Nut, Blue

Mfr Part: 05071B000

SMITH & WESSON

$4.99

In Stock

FITS: 31, .32; 32, .32; 34, .22; 36, .38; 37, .38; 38, .38; 42/442, .38; 49, .38; 10, .38; 12-4, .38; 13-3, .357; 14, .38; 15-4, .38; 16, .32 Mag; 17-4, .22; 19, .357; 581, .357; 586, .357; 24, .44 Spl; 25-2, .45 ACP; 25-5, .45 LC; 27-4, .3

#55
227230000 THUMBPIECE, BLUE
940-227-230WB
Thumbpiece, New Style, Blue

Mfr Part: 227230000

SMITH & WESSON

$19.99

Out of Stock

FITS: 10, .38; 12-4, .38; 13-3, .357; 14, .38; 15-4, .38; 16, .32 Mag; 17-4, .22; 19, .357; 581, .357; 586, .357; 24, .44 Spl; 25-2, .45 ACP; 25-5, .45 LC; 27-4, .357; 28, .357; 29-3, .44 Mag; 57-1, .41 Mag

#55
215710000 THUMBPIECE, S/S
940-215-710WB
Thumbpiece, New Style, SS

Mfr Part: 215710000

SMITH & WESSON

$14.99

Out of Stock

FITS: 65/65LS, .357

#55
215710000 THUMBPIECE, S/S
940-215-710WB
Thumbpiece, New Style, SS

Mfr Part: 215710000

SMITH & WESSON

$14.99

Out of Stock

FITS: K Frame - Common Parts, .38; 681, .357; 686, .357; 696, .44 Spl; 610, .10mm; 624, .44 Spl; 625, .45 ACP, .45 Colt; 627, .357; 629, .44 Mag; 657, .41 Mag

#56
226930000 TRIGGER LEVER
940-226-930WB
Trigger Lever

Mfr Part: 226930000

SMITH & WESSON

$3.99

In Stock

FITS: K Frame - Common Parts, .38; 581, .357; 586, .357; 681, .357; 686, .357; 696, .44 Spl; 24, .44 Spl; 25-2, .45 ACP; 25-5, .45 LC; 27-4, .357; 28, .357; 29-3, .44 Mag; 57-1, .41 Mag; 610, .10mm; 624, .44 Spl; 625, .45 ACP, .45 LC; 627,;

#59
228690000 TGR ASSY, MIM,.312, SMT, BL
940-227-380WB
Trigger, Smooth, .312", MIM, Blue

Mfr Part: 228690000

SMITH & WESSON

$43.28

Out of Stock

FITS: 67-2, .38; 10, .38; 10-9, .38; 12-4, .38; 13-3, .357; 13-4, .357; 14-5, .38; 15-4, .38; 15-6, .38; 17-4, .22; 17-6, .22; 18-4, .22; 19, .357; 19-6, .357; 64-4, .38; 65/65LS-5, .357; 66-3, .357; 617-0, .22; 648-0, .22 Mag; 581, .357; 5

#999
050690000 BUTT SWIVEL PIN
940-000-092WB
Butt Swivel Pin

Mfr Part: 050690000

SMITH & WESSON

$1.99

Out of Stock

FITS: K Frame - Common Parts, .38

#33
070140000 LOCKING BOLT SPRING
940-070-140WB
Locking Bolt Spring

Mfr Part: 070140000

SMITH & WESSON

$1.40

In Stock

FITS: 52 R2, .38 Spl; M52-2, 38 SPL; 31, .32; 32, .32; 34, .22; 36, .38; 37, .38; 38, .38; 42/442, .38; 49, .38; 60, .38, .357; 63, .22; 317, .22; 331TI, .32 Mag; 332TI, .32 Mag; 337TI, .38; 342TI, .38; 631/631 LS, .32 Mag; 632, .32 Mag; 63

#999
071580000 REAR SIGHT PLUNGER
940-071-580WB
Sight Plunger, Rear

Mfr Part: 071580000

SMITH & WESSON

$1.62

In Stock

FITS: 41, .22; 52 R2, .38 Spl; 4006, .40 S&W; 4506, .45 ACP; 5903, 9mm; 5904, 9mm; 5906, 9mm; M52-2, 38 SPL; 34, .22; 36, .38; 60-4, .38, .357; 63, .22; 631/631 LS, .32 Mag; K Frame - Common Parts, .38; 586, .357; 686, .357; 696, .44 Spl; 2

Schematics are the property of, and trademarks are registered to, the individual manufacturers, and are used with permission. Process Patented USPTO# 7,437,319. Patent pending # 13/360,304. Additional Patents Pending.