Flanged nut FBG

for ball screw

Product overview
Flanged single nut, type 1, in series FBG (ground) and FBR (rolled), for use with ball screw assemblies requiring flange mounting and defined axial clearance or preload.

Part Number Construction
Example (parts shown left to right):
FBG | 06 | 01 | D | X | - | 60 | R | 90 | C3 | Z | - | 001

• ① Series: FBG = Flanged single nut (ground), FBR = Flanged single nut (rolled)
• ② Screw Diameter (mm): 06 = 6 mm
• ③ Lead (mm): 01 = Standard ball lead, 1 mm; 01K = Non-standard ball lead, 1 mm
• ④ Ball Return Type: D = Deflector Type; S = End Deflector type; T = Return Tube type; C = End-cap type
• ⑤ Custom Option (Non-standard)
• ⑥ Threaded Section Length (mm): Decimal point is indicated by "_"
• ⑦ Thread Direction: R = Right-hand; L = Left-hand; LR = Right- & Left-hand
• ⑧ Total Screw Length (mm): Decimal point is indicated by "_"
• ⑨ Accuracy Grade: C3 = JIS Standard C3; C5 = JIS Standard C5; C7 = JIS Standard C7; C10 = JIS Standard C10
• ⑩ Axial Clearance: Z = Preload; T = ≤ 0.005 mm; S = ≤ 0.02 mm; N = ≤ 0.05 mm
• ⑪ Custom Serial Number

Mechanical Dimension
Dimensional drawing available for FBG / FBR type 1 (dimensional illustration for mounting and overall sizes).

Flanged Single Nut - type 1 Dimension Table
Header: Nut Type | Screw Diameter D (mm / inch) | Lead (mm / inch) | Nut Diameter D (mm / inch) | Nut Overall Length L (mm / inch) | Mounting Length L1 (mm / inch) | Flange Diameter Df (mm / inch) | Flange Thickness F (mm / inch) | Mounting Hole Diameter X (mm / inch) | Bolt Circle Diameter (PCD) (mm / inch) | Nut Flat Width V (mm / inch) | Basic Dynamic Load Rating Ca (N) | Basic Static Load Rating Coa (N)
Row1: 1 | 6 (0.24) | 6 (0.24) | 14 (0.551) | 17.2 (0.677) | 8 (0.315) | 27 (1.063) | 4 (0.157) | 3.4 (0.134) | 21 (0.827) | 16 (0.63) | 870 | 1450
Row2: 1 | 6 (0.24) | 10 (0.39) | 14 (0.551) | 23 (0.906) | 11.5 (0.453) | 27 (1.063) | 4 (0.157) | 3.4 (0.134) | 21 (0.827) | 16 (0.63) | 950 | 1600
Row3: 1 | 8 (0.31) | 8 (0.31) | 18 (0.709) | 21.5 (0.846) | 11.5 (0.453) | 31 (1.22) | 4 (0.157) | 3.4 (0.134) | 25 (0.984) | 20 (0.787) | 2200 | 3800
Row4: 1 | 8 (0.31) | 10 (0.39) | 18 (0.709) | 24 (0.945) | 13 (0.512) | 31 (1.22) | 4 (0.157) | 3.4 (0.134) | 25 (0.984) | 20 (0.787) | 2200 | 3900
Row5: 1 | 8 (0.31) | 12 (0.47) | 18 (0.709) | 28 (1.102) | 18 (0.709) | 31 (1.22) | 4 (0.157) | 3.4 (0.134) | 25 (0.984) | 20 (0.787) | 2200 | 4000
Row6: 1 | 12 (0.472) | 5 (0.197) | 24 (0.945) | 30 (1.181) | 15 (0.591) | 40 (1.575) | 10 (0.39) | 4.5 (0.177) | 32 (1.260) | 30 (1.181) | 4100 | 7400

Features / Technical specifications

• Product family / Series: FBG (Flanged single nut - ground), FBR (Flanged single nut - rolled)
• Nut Type: Flanged single nut (type 1)
• Screw diameters shown: 6 mm, 8 mm, 12 mm (with inch equivalents indicated)
• Lead options shown: 1 mm (standard), 5 mm, 6 mm, 8 mm, 10 mm, 12 mm (and non-standard variants like 01K)
• Ball return types: Deflector (D), End Deflector (S), Return Tube (T), End-cap (C)
• Thread directions: Right-hand (R), Left-hand (L), LR (both)
• Accuracy grades: JIS C3, C5, C7, C10
• Axial clearance / Preload options: Preload (Z), ≤0.005 mm (T), ≤0.02 mm (S), ≤0.05 mm (N)
• Dimension data: full dimensional table provided for nut type 1 including flange, mounting hole, PCD, and load ratings (dynamic and static)
• Threaded section and total screw length notation: decimal point indicated by "_"