PowerAC 2 1/4"-4 RA w/Bronze Nut

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PowerAC 2 1/4"-4 RA w/Bronze Nut

Inch Acme Screw Assembly, 2 1/4", 4140, 4 Turns Per Inch, RH, 1 Starts, Bronze Nut

Nook Industries Offers the largest selections of rolled amce screw sizes in the industry. Rolled thread screws are cost effective and are stocked for quick delivery.

PowerAcâ„¢ Inch Acme screws and nuts include a centralizing (C) thread form to prevent wedging and binding. When compared to general-purpose thread forms (G), centralizing threads are manufactured with tighter tolerances and reduced clearance on the major diameter.

Special high tensile bronze is selected for our smooth running, anti-wedging bronze nuts.
  • Material: Nook Bronze
  • Tensile Yield: 50,000 psi
  • Tensile Ultimate: 65,000 psi
  • Hardness: HB75
  • Dynamic co-efficient of friction: 0.125 with Nook Lubricant

Part Number powerac_2_1_4_4_w_bronze_nut
20 ft. Part Number No
3 ft. Part Number 11224
6 ft. Part Number 12224
A - Root Diameter Minimum [in] 1,944
B [in] 3,06
C [in] 3,38
Company Nook Industries
D - Nominal Rod Diameter [in] 2,25
Dynamic Load Capacity [lb] 25312
E [in] 1,56
End Code for Type 4 [* Journals may show tracings of the thread] 28
End Code for Types 1,2,3,5 [* Journals may show tracings of the thread] 45
F BCD [in] 4,38
F (n) Dia. [in] (6) .656
Flange No-Lash Part Number 73540
Flange Part Number FLG7574
Flange Weight [lb] 9,88
Form 2C
G [in] 1,58
H [in] 5,38
J [In] 3.137-12
Lash (Maximum Axial) [in] 0,012
Nut Weight [lb] 4,98
Screw Code 224-RA
Screw Material 4140 Series
Starts 1
Static Load Capacity [lb] 81000
Thread Code 224
Threads Per Inch 4
Torque to Raise 1 lb. [in-lb] 0,181
Turns Per Inch 4
12 ft. Part Number 13224
Efficiency [%] 22
Part Number 20224
Lead Accuracy In In 0,0003
Lead [in] 0,25
Nominal Rod Diameter [in] 2,25
Pitch [in] 0,25
Screw Weight [lb./ft.] 11,29

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