Pocket Watch Database

Illinois Watch Parts: Grade

Mainsprings

Part Factory Part Number
Mainspring 47302 Part Number: JA402
Company: Illinois
Size: 18
Factory No.: 47302
Alt Factory No.: 53
Dennison Width: 20
Dennison Strength: 3
Length: 21.5
Metric Width: 2.90
Metric Strength: 0.21
End: T-End
Mainspring 47303 Part Number: JA404
Company: Illinois
Size: 18
Factory No.: 47303
Alt Factory No.:
Dennison Width: 20
Dennison Strength: 2
Length: 21.5
Metric Width: 2.90
Metric Strength: 0.22
End: T-End
Mainspring 47309 Part Number: JA406
Company: Illinois
Size: 16
Factory No.: 47309
Alt Factory No.:
Dennison Width: 21
Dennison Strength: 6.5
Length: 27
Metric Width: 3.00
Metric Strength: 0.155
End: Double Brace and Hole
Mainspring 47315 Part Number: JA410
Company: Illinois
Size: 16
Factory No.: 47315
Alt Factory No.:
Dennison Width: 18
Dennison Strength: 4.5
Length: 20.5
Metric Width: 2.70
Metric Strength: 0.185
End: T-Brace
Mainspring 47317 Part Number: JA412
Company: Illinois
Size: 16
Factory No.: 47317
Alt Factory No.: 573
Dennison Width: 18
Dennison Strength: 3
Length: 20.5
Metric Width: 2.70
Metric Strength: 0.21
End: T-Brace
Mainspring 47321 Part Number: JA414
Company: Illinois
Size: 16
Factory No.: 47321
Alt Factory No.: 1770
Dennison Width: 18
Dennison Strength: 5
Length: 22.5
Metric Width: 2.70
Metric Strength: 0.18
End: T-Brace
Mainspring 47326 Part Number: JA415
Company: Illinois
Size: 16
Factory No.: 47326
Alt Factory No.:
Dennison Width: 18
Dennison Strength: 5.5
Length: 22.5
Metric Width: 2.70
Metric Strength: 0.175
End: Motor Barrel Brace
Mainspring 47327 Part Number: JA415
Company: Illinois
Size: 16
Factory No.: 47327
Alt Factory No.:
Dennison Width: 18
Dennison Strength: 5.5
Length: 22.5
Metric Width: 2.70
Metric Strength: 0.175
End: Motor Barrel Brace
Mainspring 47331 Part Number: JA416
Company: Illinois
Size: 16
Factory No.: 47331
Alt Factory No.:
Dennison Width: 18
Dennison Strength: 5.5
Length: 22.5
Metric Width: 2.70
Metric Strength: 0.175
End: Double Brace and Hole
Mainspring 47333 Part Number: JA419
Company: Illinois
Size: 16
Factory No.: 47333
Alt Factory No.: 124
Dennison Width: 20
Dennison Strength: 3.5
Length: 20.5
Metric Width: 2.90
Metric Strength: 0.2
End: T-End
Mainspring 47334 Part Number: JA421
Company: Illinois
Size: 16
Factory No.: 47334
Alt Factory No.:
Dennison Width: 16
Dennison Strength: 3
Length: 20
Metric Width: 2.50
Metric Strength: 0.21
End: T-End
Mainspring 47337 Part Number: JA422
Company: Illinois
Size: 13
Factory No.: 47337
Alt Factory No.: 1845
Dennison Width: 5
Dennison Strength: 5
Length: 18.5
Metric Width: 1.35
Metric Strength: 0.18
End: Motor Barrel Brace
Mainspring 47337 Part Number: JA422
Company: Illinois
Size: 12XT
Factory No.: 47337
Alt Factory No.: 1845
Dennison Width: 5
Dennison Strength: 5
Length: 18.5
Metric Width: 1.35
Metric Strength: 0.18
End: Motor Barrel Brace
Mainspring 47343 Part Number: JA423
Company: Illinois
Size: 12
Factory No.: 47343
Alt Factory No.:
Dennison Width: 11
Dennison Strength: 6
Length: 18.5
Metric Width: 2.00
Metric Strength: 0.17
End: T-Brace
Mainspring 47344 Part Number: JA425
Company: Illinois
Size: 12
Factory No.: 47344
Alt Factory No.: 1236
Dennison Width: 11
Dennison Strength: 5
Length: 18.5
Metric Width: 2.00
Metric Strength: 0.18
End: T-Brace
Mainspring 47358 Part Number: JA428
Company: Illinois
Size: 0
Factory No.: 47358
Alt Factory No.: 981
Dennison Width: 8
Dennison Strength: 9
Length: 13
Metric Width: 1.70
Metric Strength: 0.13
End: T-End
Mainspring 47358 Part Number: JA428
Company: Illinois
Size: 3/0
Factory No.: 47358
Alt Factory No.: 981
Dennison Width: 8
Dennison Strength: 9
Length: 13
Metric Width: 1.70
Metric Strength: 0.13
End: T-End
Mainspring 47364 Part Number: JA432
Company: Illinois
Size: 6/0
Factory No.: 47364
Alt Factory No.: 1422
Dennison Width: 3
Dennison Strength: 9
Length: 10.5
Metric Width: 1.20
Metric Strength: 0.13
End: T-Brace
Mainspring 47371 Part Number: JA434
Company: Illinois
Size: 6/0
Factory No.: 47371
Alt Factory No.:
Dennison Width: 5
Dennison Strength: 10
Length: 12.5
Metric Width: 1.40
Metric Strength: 0.11
End: T-Brace
Mainspring 47383 Part Number: JA436
Company: Illinois
Size: 18/0
Factory No.: 47383
Alt Factory No.:
Dennison Width: 3
Dennison Strength: 12
Length: 10.5
Metric Width: 1.20
Metric Strength: 0.09
End: T-Brace