Mechanical Properties of Inch Fasteners
Mechanical Properties of Externally Threaded Fasteners
Specification
Material
Size Range(in.)
SAE J429-Grade 1SAE J429-Grade 2
1/4 - 1 1/2
Low or medium carbon steel
1/4 - 3/47/8 - 1 1/2
Low or medium carbon steel
Min. Proof Strength(psi)33,00055,00033,000
Min. Tensile Strength
(psi)60,00074,00060,000
Core Hardness RockwellMin.B70B80B70
Max.B100B100B100
Min. Yield Strength(psi)36,00057,00036,000
ASTM A563 Grade A (Hex up to 1-1/2 & Heavy Hex 1-1/2
and over)ASTM A563 Grade A Hex
Grade Identification Marking
Compatible Nuts
ASTM A307-Grade A1/4 - 460,000B69B100
ASTM A307-Grade B
Low or medium carbon steel
1/4 - 460,000(min)B69B95
ASTM A563 Grade A Heavy
Hex
SAE J429-Grade 5
1/4 - 1Medium carbon
steel: quenched &
tempered1 1/8 - 1 1/21/4 - 1Medium carbon steel: quenched &
tempered1 1/8 - 1 1/21/4 - 1Medium carbon
steel: quenched & 1 1/8 - 1 1/2
tempered
1 3/4 - 3Medium carbon alloy steel: quenched & temperedMedium carbon alloy steel: quenched & temperedMedium carbon alloy steel: quenched & temperedMedium carbon alloy steel: quenched & temperedMedium carbon boron steel: quenched & temperedMedium carbon alloy steel: quenched & temperedMedium carbon alloy steel: quenched & temperedalloy steel: quenched & temperedLow or medium carbon steel
1/4 - 2-1/2Over 2-1/2
85,00074,00085,00074,00085,00074,00055,000105,00095,000
120,000105,000120,000105,000120,000105,00090,000125,000105,000
C25C19C25C19C25C19
C34C30C34C30C34C30
92,000
SAE J995 Grade 5 Hex
81,00092,00081,00092,00081,00058,000
SAE J995 Grade 5 up to 1-1/2, ASTM A563 Grade A Heavy Hex 1-1/2 & over, DH Heavy
Hex if GalvASTM A563 Grade C Heavy
Hex, DH if Galv
ASTM A325 - Type 1
ASTM A563 Grade C Heavy
Hex, DH if Galv
ASTM A449-Type1
ASTM A354- Grade
BC
C26C22
C36C33
109,00099,000
SAE J429-Grade 81/4 - 1 1/2120,000150,000C33C39130,000SAE J995 Grade 8 Hex
1/4 - 2-1/2Over 2-1/2
120,000105,000
150,000140,000
C33C31
C39C39
130,000115,000
ASTM A354 Grade BD
ASTM A563 Grade DH Heavy
Hex
ASTM A490-Type 11/2 - 1-1/2120,000
150,000 (min) 173,000 (max)
C33C39130,000
ASTM A563 Grade DH Heavy
Hex
SAE J429-Grade 8.21/4 - 1120,000150,000C33C39130,000SAE J995 Grade 8 Hex
FNL Grade 91/4 - 1-1/4140,650180,000C38C42159,500FNL Grade 9 Thick Hex Nut
ASTM A574 Socket Head Cap ScrewButton
& Flat Countersunk Head Cap ScrewASTM F1554 Anchor Bolts, Steel Grade 36Notes
#0 - 1/2over 1/2 - 2#0 - 1/2over 1/2 1/4 - 4-in
140,000135,000
180,000170,000145,000135,00058,000(min) 80,000 (max)
C39C37C39C37
C45C45C44C44
36,000
ASTM A563 Grade A (hex up to 1-1/2 & Heavy Hex 1-1/2
and over)1, 2, 3
153,000
1. Compatible denotes commercially available nut having suitable mechanical properties and dimensional configuration or style which will make it possible to obtain the desired bolt load. Higher strength nuts may be a suitable substitue provided bolt standard allows.
2. Galvanized nuts are intended for use with externally threaded fasteners that are hot-dip or mechanically galvanized or have acoatingof sufficient thicknesstorequireover-tappingofthenut toprovideassembly.3. ASTM A194 2H heavy hex nut may be used in liew as a substitute for ASTM A563 DH heavy hex nut