SAE J 81 - 1997 Thread Rolling Screws

螺纹

10#

1/4

5/16

3/8

7/16

1/2

牙数
大径 ^①	最大值
末端直径 ^②	最大值
螺纹外接圆直径 ^③	最大值
末端外接圆直径 ^③	最大值
末端长度 ^④	最大值
末端长度 ^⑤	最小值
最小公称长度	90°头
最小公称长度	沉头
螺纹长度 ^⑧	公称值
完整螺纹长度 ^⑧	最小值
两倍螺距长度 ^⑧	粗牙

56	48	40	40	32	32	24	20	18	16	14	13
0.086	0.099	0.112	0.125	0.138	0.164	0.190	0.250	0.313	0.375	0.438	0.500
/	/	0.086	0.099	0.106	0.132	0.147	0.198	0.255	0.310	0.361	0.416
0.088	0.101	0.115	0.128	0.141	0.167	0.194	0.255	0.318	0.381	0.445	0.508
0.070	0.081	0.090	0.103	0.111	0.137	0.153	0.206	0.264	0.320	0.375	0.433
0.062	0.073	0.088	0.088	0.109	0.109	0.146	0.175	0.194	0.219	0.250	0.269
0.036	0.042	0.050	0.050	0.062	0.062	0.083	0.100	0.111	0.125	0.143	0.154
5/32	3/16	3/16	7/32	1/4	1/4	5/16	13/32	15/32	9/16	21/32	23/32
3/16	7/32	1/4	1/4	5/16	11/32	13/32	1/2	5/8	23/32	13/16	7/9
5/8	5/8	3/4	7/8	7/8	1	1-1/4	1-1/2	1-1/2	1-1/2	1-1/2	1-1/2
0.52	0.59	0.67	0.75	0.83	0.98	1.14	1.50	1.50	1.50	1.50	1.50
0.036	0.042	0.050	0.050	0.062	0.062	0.083	0.100	0.111	0.125	0.143	0.154

①, 细牙系列螺纹同样有效
②, 表列尺寸适用于螺钉在辗制螺纹前的坯径，其螺坯形状近似于圆周形。
③, 这些尺寸适用于螺纹圆周有些部位比其他型式（叶片状、椭圆、三点圆等）离螺钉轴线更远的螺钉形式。
④, 表列数值等于3.5倍螺距，圆整到小数点后三位。
⑤, 表列数值等于2倍螺距，圆整到小数点后三位。
⑥, 头部尺寸应符合SAE J478 和 ANSI B18.6.4 的要求
⑦, 螺纹和末端尺寸应符合表中规定。螺纹应符合60°基本牙型；但不需要进行螺纹测量。末端形状由制造者选择，但应保证所有规定尺寸和螺钉性能符合该表中要求。
⑧, 螺纹长度：对于公称长度等于或小于表中所列公称长度的螺钉，全螺纹应在接近头部的位置延伸，以使规定指定的螺纹大径极限保持在两个螺距（螺纹）以内或更小（如果可行）。除非另有规定，公称长度大于表中所列长度的螺钉的最小全螺纹长度应等于基本螺钉直径的6倍或1.50英寸（以较短者为准）。

材料

熔炼分析

产品分析

含碳量%	最小值
含碳量%	最大值
含锰量%	最小值
含锰量%	最大值

0.15	0.13
0.25	0.27
0.70	0.64
1.65	1.71

①, 自挤自攻螺钉应由符合表中化学成分要求的镇静钢采用冷镦工艺加工制造。
②, 热处理：自挤自攻螺钉应在气体渗碳设备中热处理。如果采用连续(不是分批)淬火工艺，能够稳定地确保均匀的表面和芯部硬度，需方可以同意采用氰化设备。
最低回火温度应为650℉（343.33℃）。
③, 表面处理：螺钉应镀镉或镀锌，镀层厚度为0.0002~0.0004 英寸；或磷化处理并涂油，为达到性能要求，螺钉表面还可以涂上润滑油，由制造者自行决定。
为避免氢脆，在电镀后，自挤自攻螺钉应尽快在375~450℉温度范围内进行烘烤，最少1小时（在间歇式工艺中通常至可烘烤4小时，以确保一批产品中所有螺钉都经过处理）。如果自挤自攻螺钉交付需方后（或在需方控制下）进行电镀或涂覆，螺钉制造者对电镀或涂覆引起的缺陷不负责任。

螺纹

10#

1/4

5/16

3/8

7/16

1/2

牙数/PP
最小抗拉强度 ^④	磅 [lb]
最小抗扭强度 ^⑤	磅-英寸 [in-lb]
最小抗扭强度 ^⑤	磅-英尺 [ft-lb]
最大拧入扭矩 [磅-英寸] ^⑥	用于PC和CP螺钉
最大拧入扭矩 [磅-英尺] ^⑥	用于PC和CP螺钉
最大拧入扭矩 [磅-英寸] ^⑥	用于ZP螺钉
最大拧入扭矩 [磅-英尺] ^⑥	用于ZP螺钉
夹紧载荷	磅 [lb]
最大紧固扭矩 [磅-英寸] ^⑦	用于PC和CP螺钉
最大紧固扭矩 [磅-英尺] ^⑦	用于PC和CP螺钉
最大紧固扭矩 [磅-英寸] ^⑦	用于ZP螺钉
最大紧固扭矩 [磅-英尺] ^⑦	用于ZP螺钉
保证扭矩 [磅-英寸] ^⑧	用于PC和CP螺钉
保证扭矩 [磅-英尺] ^⑧	用于PC和CP螺钉
保证扭矩 [磅-英寸] ^⑧	用于ZP螺钉
保证扭矩 [磅-英尺] ^⑧	用于ZP螺钉
氢脆扭矩 [磅-英寸] ^⑨	用于CP螺钉
氢脆扭矩 [磅-英尺] ^⑨	用于CP螺钉
氢脆扭矩 [磅-英寸] ^⑨	用于ZP螺钉
氢脆扭矩 [磅-英尺] ^⑨	用于ZP螺钉

56	48	40	40	32	32	24	20	18	16	14	13
500	660	810	1100	1250	1900	2350	4300	7100	10500	14400	19100
6	10	14	22	24	48	65	156	330	600	840	1080
/	/	/	/	/	/	/	13	27.5	50	70	90
4.5	7.5	9	12	14	25	35	90	180	240	360	540
/	/	/	/	/	/	/	7.5	15	20	30	45
6	9.5	13	16	20	32	52	120	240	300	480	660
/	/	/	/	/	/	/	10	20	25	40	55
/	/	/	/	460	700	900	1600	2600	4000	5400	7200
/	/	/	/	19	37	55	120	252	480	744	996
/	/	/	/	/	/	/	10	21	40	62	83
/	/	/	/	25	48	68	144	312	612	900	1140
/	/	/	/	/	/	/	12	26	51	75	95
7	12	17	25	28	50	68	162	342	636	888	1170
/	/	/	/	/	/	/	13.5	28.5	53	74	97.5
8	13.5	19	28	33	57	77	186	372	690	960	1260
/	/	/	/	/	/	/	15.5	31	57.5	80	105
4.5	7.5	10.5	17	18	36	49	114	252	456	630	816
/	/	/	/	/	/	/	9.5	21	38	52.5	68
5	8.5	12	19	20	41	55	132	276	510	720	930
/	/	/	/	/	/	/	11	23	42.5	60	77.5

①, 表中所列数值的目的是作为技术规范，供检验、衡量螺钉是否符合标准要求用，如果使用各种不同试验条件时，表列数值则不适用。
②, 代号说明：
CP-镀镉
ZP-镀锌
PC-磷酸盐涂层
③, 硬度：
3.1 芯部硬度：28~38 HRC.
3.2 表面硬度：大于或等于 45 HRC.
3.3 渗碳层深度：
4#和6#：0.002~0.007 in.
8#~12#: 0.004~0.009 in.
≥ 1/4 : 0.005~0.011 in.
④, 抗拉强度：公称长度≥1/2 in或3倍螺钉公称直径（较大值）的六角头和六角头凸缘头自挤自攻螺钉的抗拉强度，应不低于表中规定。长度小于上述尺寸的螺钉及其他头型的螺钉，不进行抗拉强度试验。
⑤, 抗扭强度：在螺钉承受的扭矩低于表中规定的抗扭强度时，螺钉不应损坏。
⑥, 拧入扭矩：根据螺钉规格和表面处理，施加不大于表中规定的拧入扭矩，螺钉应能在试验钢板内成形出相配的内螺纹，而螺钉自身不应变形。
⑦, 紧固扭矩：对于≥6#的六角和六角凸缘螺钉，根据其规定和表面处理，施加不大于表中规定的紧固扭矩时，螺钉应能承受表中规定的紧固扭矩，对于小于6#的螺钉及其他头型的螺钉，没有紧固扭矩试验要求。
⑧, 保证扭矩：对六角头和六角凸缘头螺钉，根据其规格和表面处理，施加相应保证扭矩，螺钉不应损坏，并能从试验钢板上拧出，对于其他头型的螺钉，没有保证扭矩试验要求。
⑨, 韧性：在螺钉头部支承面和垂直于螺钉轴线的平面之间形成7°永久变形的情况下，螺钉头部于杆部不应断裂。
⑩, 氢脆：对镀镉或镀锌的螺钉应能承受表中规定的相应抗氢脆扭矩而不损坏。

GB /T 3098.6 - 2023

Mechanical properties of fasteners - Stainless steel Bolts, screws and studs

GB /T 3098.24 - 2020

Mechanical properties of fasteners-Stainless steel and nickel alloys bolts, screws, studs and nuts for high temperature applications

GB /T 3098.25 - 2020

Mechanical properties of fasteners-Guidance for the selection of stainless steels and nickel alloys for fasteners

GB /T 3098.9 - 2020

Mechanical Properties of Fasteners - Prevailing Torque Type Steel Nuts

GB /T 3098.3 - 2016

Mechanical properties of fasteners-Set screws

GB /T 3098.2 - 2015

Mechanical properties of fasteners-nuts with coarse thread

GB /T 32076.2 - 2015

High-strength structural bolting assemblies for preloading - Part2: Suitability for preloading

GB /T 3098.15 - 2014

Mechanical properties of fasteners - Stainless steel nuts

GB /T 3098.16 - 2014

Mechanical properties of fasteners - Stainless steel set screws

GB /T 3098.21 - 2014

GB /T 3098.6 - 2014

Mechanical properties of fasteners - Stainless steel Bolts, screws and studs

GB /T 3098.1 - 2010

Mechanical properties of fasteners-Bolts、screws and studs

GB /T 3098.8 - 2010

Mechanical properties of fasteners Parts for bolted connections for use at temperatures from -200 ℃～+700 ℃

GB /T 3098.9 - 2010

GB /T 3098.22 - 2009

Mechanical properties of fasteners made of the fine grain non-heat treatment steel-Bolts,screws and studs

GB /T 94.1 - 2008

Spring washer technical conditions

GB /T 94.3 - 2008

GB /T 3098.19 - 2004

Mechanical properties of fasteners-Blind rivets

GB /T 3098.20 - 2004

Mechanical properties of fasteners. Wing nuts with specified proof torque

GB /T 3098.11 - 2002

Mechanical properties of fasteners-Drilling screws with tapping screws thread

GB /T 3098.9 - 2002

Mechanical properties of fasteners. Prevailing torque type steel hexagon nuts

GB /T 3098.4 - 2000

Mechanical properties of fasteners-Nuts-Fine pitch thread

GB /T 3098.5 - 2000

Mechanical propretles of fasteners tapping screws

GB /T 3098.6 - 2000

Mechanical properties of fasteners-Bolts、screws and studs made of stainless-steel

GB /T 3098.7 - 2000

Machanical properties of fasteners-Thread rolling screws

GB /T 3098.10 - 1993

Mechanical properties of fasteners Bolts,scrows,studs and nuts made of non-ferrous metals

GB /T 94.2 - 1987

GB /T 116 - 1986

Specification for revit

GB /T 3098.5 - 2016

Mechanical Properties of Fasteners 一 Tapping Screws

ISO 898 (-2) - 2022

Mechanical properties of fasteners made of carbon steel and alloy steel — Part 2: Nuts with specified property classes

ISO 3506-2 - 2020

Mechanical properties of corrosion-resistant stainless steel fasteners - Nuts with specified grades and property classes bsi.

ISO 898 (-3) - 2018

Mechanical properties of fasteners made of carbon steel and alloy steel – Part 3: Flat washers with specified property classes

ISO 2320 - 2015

Mechanical Properties of Fasteners - Prevailing Torque Type Steel Nuts

ISO 898-1 - 2013

Mechanical properties of fasteners made of carbon steel and alloy steel. Part 1:Bolts,screws and studs with specified property classes. Coarse thread

ISO 898-2 - 2012

Mechanical properties of fasteners made of carbon steel and alloy steel - Part 2: Nuts with specifed property classes - Coarse thread and fne pitch thread

ISO 898-5 - 2012

Mechanical properties—Set screw and similar threaded fasteners with specified hardness classes

ISO 2702 - 2011

Heat-treated steel tapping screws—Mechanical properties

ISO 3506-2 - 2009

Mechanical properties of corrosion resistant stainless steel fasteners—Part 1:Nuts

ISO 3506-3 - 2009

Mechanical properties of corrosion resistant stainless steel fasteners— Part 3:Set screws and similar fasteners not under tensile stress

ISO 3506-4 - 2009

Mechanical properties of corrosion resistant stainless steel fasteners— Part 4:Tapping screws

ISO 10666 - 1999

Drilling screws with tapping screw thread— Mechanical and functional properties

ISO 7085 - 1999

Mechanical and performance requirements of case hardened and tempered metric thread rolling screws

ISO 898-6 - 1994

Mechanical properties of fasteners - Part 6: Nuts with specified proof load values - Fine pitch thread

ISO 898-7 - 1992

Torsional test and minimum torques for bolts and screws

ISO 8839 - 1986

Mechanical properties of fasteners—Bolts,screws,studs and nuts made of non-ferrous metals

JB /T 6040 - 2011

Test methods of tightening torque for bolts

JB 6688 - 1993

ASME/ANSI B 18.6.3 (T49) - 2013

Maximum Drive Torque for Type TRS Tapping Screws

ASME/ANSI B 18.6.3 (T50) - 2013

Torsional Strength Requirements for Tapping Screws

ASME/ANSI B 18.21.1 - 2009

ASME/ANSI B 18.16.6 - 2008

Nylon Insert Locknuts (Inch Series)

EN 2576 - 2020

Aerospace series - Bolts, MJ threads, in heat resisting steel FE-PA2601 (A286) - Classification: 900 MPa (at ambient temperature)/650℃ - Technical specification

EN 15048-1 - 2016

Non-preloaded structural bolting assemblies - Part 1: General requirements

EN 14399-2 - 2015

High-strength structural bolting assemblies for preloading - Part 2: Suitability for preloading

EN 20898-7 - 1995

Mechanical properties of fasteners - Part 7: Torsional test and minimum torques for bolts and screws with nominal diameters 1 mm to 10 mm

EN 20898-2 - 1993

Mechanical properties of fasteners - Part 2: Nuts with specified proof load values - Coarse thread

EN 20898-6 - 1992

Mechanical properties of fasteners - Part 6: Nuts with specified proof load values - Fine pitch thread

EN 20898-1 - 1991

Mechanical properties of fasteners - Part 1: Bolts, screws and studs

EN 28839 - 1991

Mechanical Properties of Fasteners - Bolts, Screws, Studs and Nuts

ASTM A194/A194M - 2016

ASTM A 193/193M - 2015

ASTM A 453/453M - 2011

ASTM A 354 - 2011

ASTM A 325 - 2011

ASTM A 490 - 2011

ASTM A 574 - 2011

ASTM A 307 - 2010

Carbon Steel Bolts, Studs, and Threaded Rod 6000 PSI Tensile Strength

ASTM A 449 - 2010

ASTM A 563 - 2007

ASTM F 568M - 2007

ASTM F 835 - 2004

ASTM A 194 - 2000

Carbon steels、alloy steels and stainless materials for bolts and nuts

AS 3566.1 - 2002

Self-drilling screws for the building and construction industries Part 1: General requirements and mechanical properties

SAE J 429 - 2013

SAE J 995 - 2012

SAE J 933 - 2005

ASME B 18.6.3 (T4.11.2-1) - 2024

Maximum Drive Torque for Type TRS Tapping Screws

ASME B 18.6.3 (T4.11.3-1) - 2024

Torsional Strength Requirements for Tapping Screws