ASME B18.31.3 pdf free download

ASME B18.31.3-2014 pdf free download.Threaded Rods (Inch Series).
Unified threads shall conform to the requiremenLs of ASMF liii. h,r UNC and UNF threads, (lass IA will 1w furnished unless otherwise specified. Class 2A shall
1w applicable for SUN threads and at the manufaL turer’s option for other series, and for sizes where Class 1A is not applicable. Plated threads shall conform to ASMl 111.1, (iass3A high limit (basic) and the low limit requirement of the before-coated or plated thread class.
Acme threads shall meet the requirements of ASME Hl.5, Class 2G.
Table 1 contains the thread diameter and thread,. per inch combinations for Unified and Acme thread sizes considered standard.
2.3 Thread Acceptance Gaging
Unless otherwise specified by the purchaser, gaging for screw thread dimensional acceptability shall be in accordance with Gaging System 21 as specified in
ASME HL3.
2.4 Ends
The ends shall be of sulfident workmanship to allow for easy assembly with an appropriate mating nut.
2.5 Straightness
When required, straightness limits and the inspection technique to Lw used to evaluate straightness shall Lw agreed upon between the purchaser and the supplier.
2.6 MaterIals and Mechanical Requirements
The purchaser must specify the applicable specification for the threaded rod material. The material shall meet the chemkal and mechanical properties of the applicable specification. Listed below are some of the primary material specifications for threaded rod. Other materials may be specified by the purchaser.
2.6.1 Steel Threaded Rod
2.6.1.1 Steel. The designation “steel” means low- carbon steel meeting all of the matenal and mechanical requiremenis of ASTM A307, Grade A.
2.6.1.2 Grade 36. The designation “Grade 36” means steel material meeting all of the material and mechanical requirements of ASTM F 1554, Grade 36.
NOTE: A di’signation ol “A36” or “ASTM A36” rfrrs to raw material onh and is inappropriate ts a fastener referune. The purchaser shalt use the designation “ASTM A307A” or “ASTM F 1354. Grade 36’ as required.
2.6.1.3 B7. The designation “87’ nwaas a chromium molybdenum steel meeting all of the material and mechanual requin’mentsof ASTM A 193, Grade H7. Other grades of steel for high-temperature applications may be ordered to other grades in ASTM A 193/Al 93M.
2.6.1.4 Other Acceptable Steel Materials for Threaded Rod
(a) [.ow strength: SAF J429, C;rades 1 and 2
(l’S) Medium strength: ASTM A449, Type 1; ASTM F 1554, Grade 105
(c) High strength: A.STM A354, Grades BC and HI); SA J429, Grade S
2.6.2 Stainless Steel Threaded Rod
2.6.2.1 Stainless Steel (or SST). The designation “stainless steel” or “SST’ means material meeting all of the material and mechanical requirements of ASTM F593, Aflov Group 1, Condition CW.
2.6.2.2 316 Stainless Steel (or 316). The designation “316 stainless steel” or “316” means material meetmg all of the material and mehanidl requirements of ASTM F593, Alloy Group 2, Condition CW.
2.6.2.3 Other 5tainless Steels. Spedfic alloys of stainless steel threaded rod ma’ be ordered by listing the spctifk alloy and ondttion per ASTM F59’3.
2.6.3 Nonferrous Threaded Rod
2.6.3.1 Brass. The designation “brass” means material meeting all of the material and mechanical requirements for am brass or naval brass of ASTM F468 at the supplier’s option.ASME B18.31.3 pdf download.