Illinois Watch Mainsprings

18 Size, factory # 47303, width in mm 2.9, strength in mm 0.22, length inches 21-1/2, end T Swiss Made White Alloy Mainspring

JA-404

 

16 Size, factory # 47309 Width in mm 3 in Dennison 21 Strength in mm 0.155 in Dennison 6 3/4 Length inches 27, end D.B. Listed in The E. & J. Swigart 1952 Illustrated Manual of American Watch Movements list this mainspring for 60 hour models except the 10th model Sangamo Special which takes a thiner 2.70 width mainspring JA-415 Alloy or 47330 blue steel also this on this page. Swiss Made White Alloy Mainspring

JA-406

 

Size 16, factory # 47315, 4th thru 9th Models with small barrel .744" diameter. Spring Width in mm 2.7, strength in mm 0.185, length inches 20-1/2, end T-BRACE Swiss Made White Alloy Mainspring

JA-410

 

Size 16, factory # 47317, 4th thru 9th Models with small barrel .744" diameter. Spring Width in mm 2.7, strength in mm 0.21, length inches 20-1/2, end T-BRACE Swiss Made White Alloy Mainspring

JA-412

 

Size 16 Bunn Special, factory # 47326/47327 Width in mm 2.7 in Dennison 18 Strength in mm 0.175 in Dennison 5 1/2, length inches 22-1/2, Motor Barrel. For all 11th and 12th and models except for the 60 hour version, which use the spring number JA-406. Also the Sangamo Special Model 10s which has a Motor Barrel takes this JA-415 Mainspring. Swiss Made White Alloy Mainspring

JA-415

 

Size 16, factory # 47331, for 10th Model Sangamo Special 60 Hour Watches. Extra thin, width in mm 2.7, strength in mm 0.175, length inches 22-1/2, end D.B. Swiss Made White Alloy Mainspring

JA-416

 

Size 16, factory # 47333, for 4th & 5th model with thick barrel. Spring width in mm 2.9, strength in mm 0.2, length inches 20-1/2, end T Swiss Made White Alloy Mainspring

JA-419

 

For 14 and 16 Size, factory # 47334, thin barrel .150". Spring width in mm is 2.5, strength in mm 0.21, length in inches is 20, with end T Also this is the replacement mainspring for the Waltham 14 size 2211 mainspring. Swiss Made White Alloy Mainspring

JA-421

 

0 Size & 3/0 Size, factory # 47358, width in mm 1.7, strength in mm 0.13, length inches 13, end T Swiss Made White Alloy Mainspring

JA-428

 

Size 6/0, 4th to 6th models hunting case factory # 47371, width in mm 1.4, strength in mm 0.11, length inches 12.5, end T-BRACE Swiss Made White Alloy Mainspring

JA-434

 

Size 18/0, factory # 47383, width in mm 1.2, strength in mm 0.09, length inches 10.5, end T-BRACE Swiss Made White Alloy Mainspring

JA-436

 

Size 12, 1st to 4th models factory # 47344. Spring width in mm 2, strength in mm 0.18, length inches 18-1/2, end T-BRACE Swiss Made White Alloy Mainspring

JA-425

 

Size 18, factory # 47302, For 1st, 2nd, 3rd, 4th, 5th and 6th models. Width in mm 2.9, strength in mm 0.21, length inches 21-1/2, end T Swiss Made White Alloy Mainspring

JA-402
Discontinued. Use JA-404

Size 12, factory # 47343, width in mm 2, strength in mm 17, length inches 18-1/2, end T-BRACE. Discontinued, please use JA-425.

JA-423
Discontinued

For 16 Size 4th to 9th models with small barrel .744" diameter at the teeth. Width 2.70 mm, Thickness 0.17 mm, Length 20 1/2 inches

ILLINOIS-47313

 

Quantity	1 - 2	3+
Price	$15.00	$12.00

For 16 Size 4th to 9th models with small barrel .744" diameter at the teeth. Width 2.70 mm, Thickness 0.18 mm, Length 20 1/2 inches

ILLINOIS-47314

 

Quantity	1 - 2	3+
Price	$15.00	$12.00

For 16 Size 4th to 9th models with small barrel .744" diameter at the teeth. Width 2.70 mm, Thickness 0.185 mm, Length 20 1/2 inches

ILLINOIS-47315

 

Quantity	1 - 2	3+
Price	$15.00	$12.00

For 16 Size 4th to 9th models with small barrel .744" diameter at the teeth. Width 2.70 mm, Thickness 0.19 mm, Length 20 1/2 inches

ILLINOIS-47316

 

Quantity	1 - 2	3+
Price	$15.00	$12.00

For 16 Size 4th to 9th models with small barrel .744" diameter at the teeth. Width 2.70 mm, Thickness 0.20 mm, Length 20 1/2 inches

ILLINOIS-47317

 

Quantity	1 - 2	3+
Price	$15.00	$12.00

For all Bunn Special Motor Barrel Movements except 60 Hour movements Width 2.70 mm, Thickness 0.175 mm, Length 22 1/2 inches

ILLINOIS-47327

 

Quantity	1 - 2	3+
Price	$15.00	$12.00

For all Bunn Special Motor Barrel Movements except 60 Hour movements Width 2.70 mm, Thickness 0.175 mm, Length 22 1/2 inches

ILLINOIS-47327-BLUE

 

Quantity	1 - 2	3+
Price	$8.00	$6.00

10th model Sangamo Special Width 2.70 mm, Thickness 0.175 mm, Length 22 1/2 inches

ILLINOIS-47331

 

Quantity	1 - 2	3+
Price	$18.00	$12.95

16 Size 4th & 5th Model with Thick Barrel .150 inch Width 2.90 mm, Thickness 0.20 mm, Length 20 1/2 inches

ILLINOIS-47333

 

Quantity	1 - 2	3+
Price	$15.00	$12.00

12 Size 1st to 4th Models Width 1.99 mm, Thickness 0.16 mm, Length 18 1/2 inches

ILLINOIS-47342

 

Quantity	1 - 2	3+
Price	$15.00	$12.00

For all 60 Hour 16 Size Illinois Movements. Width 3.00 mm, Thickness 0.165 mm, Length 27 inches

ILLINOIS-47310-BLUE

 

Quantity	1 - 2	3+
Price	$8.00	$6.00

For 16 Size 6th to 9th models with large barrel .762" diameter at the teeth. Width 2.70 mm, Thickness 0.17 mm, Length 22 1/2 inches

ILLINOIS-47320-BLUE

 

Quantity	1 - 2	3+
Price	$8.00	$6.00

For all Bunn Special Motor Barrel Movements except 60 Hour movements Width 2.70 mm, Thickness 0.17 mm, Length 22 1/2 inches

ILLINOIS-47326-BLUE

 

Quantity	1 - 2	3+
Price	$8.00	$6.00

16 Size 10th model Sangamo Special 60 Hour Watches Width 2.70 mm, Thickness 0.17 mm, Length 22 1/2 inches

ILLINOIS-47330-BLUE

 

Quantity	1 - 2	3+
Price	$12.00	$10.00

16 Size 4th & 5th Model with Thick Barrel .150 inch Width 2.90 mm, Thickness 0.20 mm, Length 20 1/2 inches

ILLINOIS-47333-BLUE

 

Quantity	1 - 2	3+
Price	$8.00	$6.00

14 & 16 Size 1st, 2nd & 3rd Models with Thin Barrel .138 inch Width 2.50 mm, Thickness 0.21 mm, Length 20 inches

ILLINOIS-47334-BLUE

 

Quantity	1 - 2	3+
Price	$8.00	$6.00

For 12 Size Motor Barrel Movements 5th and 6th models. Width 1.99 mm, Thickness 0.15 mm, Length 18 1/2 inches

ILLINOIS-47349-BLUE

 

Quantity	1 - 2	3+
Price	$8.00	$6.00