AS D29-1973

Table of Contents

SECTION 1. SCOPE AND SIZE DESIGNATION
1.1 Scope
1.2 Size Designation
SECTION 2. DIMENSIONS AND TOLERANCES APPLYING
TO ALL PLUGS
2.1 General
2.2 External Hexagons
2.3 External Squares
2.4 Washer Face on Hexagon Outside Head Plugs
2.5 Contour
SECTION 3. SCREW THREADS
3.1 Pipe Threads
3.2 Straight Screw Threads
SECTION 4. MATERIALS AND MANUFACTURE
4.1 Materials
4.2 Manufacture
4.3 Workmanship
4.4 Finish
4.5 Marking
SECTION 5. ASSEMBLY
5.1 Tapered Filler and Drain Plugs
5.2 Pipe Plugs
5.3 Straight Thread Filler and Drain Plugs
SECTION 6. TAPERED FILLER AND DRAIN PLUGS
6.1 Dimensions and Tolerances
SECTION 7. PIPE PLUGS
7.1 Dimensions and Tolerances
SECTION 8. STRAIGHT THREAD FILLER AND DRAIN PLUGS
8.1 Dimensions and Tolerances

Abstract

Covers tapered filler and drain plugs, pipe plugs, and straight thread filler and drain plugs up to 1 in. for tapered thread plugs and up to 2 in. for straight thread plugs. The Standard generally corresponds with the SAE Standards for these plugs.

Scope

This standard relates to the following types of plugs: (a) Plugs with tapered threads (b) Plugs with straight threads The plugs are intended primarily for automotive and related industrial use, and are screwed with the Dryseal SAE Short Taper Pipe Thread (PTF - SAE Short), or the Unified thread, for unpressurized applications (filler and drain plugs).
For pressurized applications, the plugs are screwed with the Dryseal American Standard Taper Pipe Thread (NPTF) (pipe plugs).
The standard specifies the dimensions and tolerances, materials, and general manufacturing requirements of the plugs.
NOTE: Other plugs in common use are screwed with British Standard Pipe Taper threads and Unified threads. The BSP thread is similar to the PTF and NPTF threads, having the same TPI in the 1/2 in and 3/4 in size, and differing by not more than one TPI in the other sizes. BSP and PTF/NPTF threads are however not compatible, having different thread forms and methods of sealing, and the plugs are not interchangeable in any sizes.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Standards Australia
Pages
ISBN
Committee	ME-054
Supersedes	Doc 1894 (1972)