ISO/TC 20/SC 4/WG 2 - Non Threaded Fasteners

ISO 9255:2008 specifies the dimensions of normal spline head bolts, with close or large tolerance normal shank and short or medium length MJ threads, in metallic material, coated or uncoated, with strength classes less than or equal to 1 100 MPa. ISO 9255:2008 is applicable to the compilation of aerospace product standards.

Gives the dimensions of pan head screws with internal offset cruciform ribbed or unribbed drive, stepped shank, short or medium length MJ threads, in metallic material, coated or uncoated, with strength classes less than or equal to 1 100 MPa. Applicable to the compilation of aerospace product standards.

Specifies the dimensions of 100° reduced countersunk head screws with internal offset cruciform ribbed or unribbed drive, close or normal shank, short or medium length MJ threads, in metallic material, coated or uncoated, with strength classes less than or equal to 1 100 MPa.

The document specifies the dimension of bihexagonal nuts for use in aerospace fastener systems.

Specifies configuration, dimensions and tolerances. Is intended for the drawing up of aerospace product standards.

Specifies the configuration, dimensions, and tolerances. Is intended for the drawing up of aerospace product standards.

Specifies the dimensions of head screws. Figure 1 illustrates the dimensions and parameters given in table 1 which includes diameter codes from 030 up to 200.

Specifies the dimensions of these bolts. Is intended for the drawing-up of aerospace product standards. Dimensions and tolerances are given in figure 1 and table 1. They are applicable after any surface coating, but before the application of any lubricant. Details of form not stated are left to the manufacturer's discretion.

Gives maximum and minimum dimensional requirements for fastening devices and for the associated drives and gauges. The combinations suggested herein are provided for metric shank diameters. This configuration is intended primarily for use in aerospace applications and other critical areas where high assembly and removal torque capabilities are required.