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Bolts, Screws and Nuts - External Wrenching UNJ Thread, Inch - Design Standard
- Aerospace Standard
- AS1132H
- Revised
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
Scope
The scope of this standard is to define the following dimensional requirements for double hexagon, hexagon head and tee headed bolts, and nuts having a minimum tensile strength ranging up to 220 ksi, unless otherwise specified.
-
a
Head dimensions (see 3.1)
-
b
Shank dimensions (see 3.2)
-
c
Geometric control (see 3.3)
-
d
Surface texture (see 3.4)
-
e
Dimensions for nuts (see Section 4)
For design calculations the AS8879 coarse threads, UNJC, shall be used for 0.1640 thread sizes and smaller, and for larger thread sizes use fine threads, UNJF.
For particulars of thread runout and lead threads for bolts, see AS3062.
NOTE: The ability of a design to achieve a given strength class will ultimately depend on the selected material and the associated processing.
Rationale
Update standard by aligning datum call-outs for geometric and positional requirements with ASME Y14.5M-1994, clarifying lightening hole depth for double hexagonal bolts and adding positional tolerances for variuos features to complete requirements.
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Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| Unnamed Dataset 1 | ||
| Unnamed Dataset 2 | ||
| TABLE 1A | HEAD DIMENSIONS FOR DOUBLE HEXAGON HEAD BOLTS | |
| TABLE 1B | DRILLED HEAD DIMENSIONS FOR DOUBLE HEXAGON HEAD BOLTS | |
| TABLE 2A | HEAD DIMENSIONS FOR DOUBLE HEXAGON HEAD BOLTS (260 KSI MIN) | |
| TABLE 2B | DRILLED HEAD DIMENSIONS FOR DOUBLE HEXAGON HEAD BOLTS (260 KSI MIN) | |
| TABLE 3A | HEAD DIMENSIONS FOR HEXAGON HEAD BOLTS | |
| TABLE 3B | DRILLED ONE HOLE - HEXAGON HEAD BOLTS | |
| TABLE 3C | DRILLED SIX HOLE - HEXAGON HEAD BOLTS | |
| TABLE 4A | HEAD DIMENSIONS FOR TEE HEAD BOLTS WITH COMPOUND UNDER HEAD RADIUS | |
| TABLE 4B | SHANK LENGTH (L) RANGE FOR BOLTS WITH COMPOUND UNDER HEAD RADIUS | |
| TABLE 5 | SHANK LENGTH (L) RANGE FOR BOLTS | |
| TABLE 6 | SHANK DIAMETER, FULL SHANK AND PD SHANK DIAMETER AND LEAD THREAD CHAMFER DIAMETER | |
| TABLE 7 | GRIP LENGTH RANGE FOR CLOSE TOLERANCE SHANK BOLTS | |
| TABLE 8 | STRAIGHTNESS OF SHANK AND THREAD - TOL AD | |
| TABLE 9 | RUNOUT TOLERANCE FOR PLAIN SHANK IN RELATION TO PITCH DIAMETER CYLINDER (ALL SIZES) | |
| TABLE 10 | GEOMETRIC TOLERANCES FOR OD, CREST OF DOUBLE HEXAGON AND CREST OF HEXAGON RELATIVE TO PLAIN SHANK | |
| TABLE 11 | POSITIONAL TOLERANCE FOR DRILLED HOLES IN HEAD OF HEXAGON AND DOUBLE HEXAGON HEAD BOLTS | |
| TABLE 12 | PERPENDICULARITY TOLERANCE FOR BEARING SURFACE RELATIVE TO THE SHANK | |
| TABLE 13 | NUT CONFIGURATIONS | |
| TABLE 14 | NUT, SELF-LOCKING, SPLINE DRIVE | |
| TABLE 15 | NUT, HEXAGON, PLAIN, DRILLED AND UNDRILLED | |
| TABLE 16 | NUT, HEXAGON, CASTELLATED | |
| TABLE 17 | NUT, HEXAGON, SHEAR, DRILLED AND UNDRILLED | |
| TABLE 18 | NUT, SELF-LOCKING, DOUBLE HEXAGON | |
| TABLE 19 | NUT, SELF-LOCKING, DOUBLE HEXAGON, REDUCED HEIGHT | |
| TABLE 20 | NUT, SELF-LOCKING, DOUBLE HEXAGON, COUNTERBORED | |
| TABLE 21 | NUT, SELF-LOCKING, DOUBLE HEXAGON (260 KSI MIN) | |
| TABLE 22 | GEOMETRIC TOLERANCES FOR NUTS |
Issuing Committee
E-25 General Standards for Aerospace and Propulsion Systems
The SAE E-25 General Standards for Aerospace & Propulsion Systems committee addresses aerospace propulsion systems and components. These systems and components include bolts, screws, nuts, washers, studs, rivets, pins, covers, O-rings, brackets, plugs and associated procurement requirements, as well as solid film lubricants and design specifications for screw threads and fastener assembly requirements.
Reference
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