Crosby® Alloy Master Links

Ratings below are for use with chain slings fabricated in accordance with ASME B30.9.

Crosby A-342 Alloy Master Link

Alloy Steel — Quenched and Tempered.
Individually Proof Tested with certification.
Proof Tested with fixture sized to prevent localized point loading per ASTM A952.

Crosby A-342 products meet or exceed all requirements of ASME B30.26 including identification, ductility, design factor, proof load and temperature requirements. Importantly, Crosby products meet other critical performance requirements including fatigue life, impact properties and material traceability, not addressed by ASME B30.26.
Sizes from 1/2” to 2” are drop forged and have a Product Identification Code (PIC) for material traceability, along with the size, the name Crosby and USA in raised lettering.
Selected sizes designated with “W” in the size column have enlarged inside dimensions to allow additional room for sling hardware and crane hook.
Incorporates patented QUIC-CHECK® deformation indicators.

A-342 Alloy Master Links

Size		Mfg. #	CSI Ref. #	Weight Each (lbs.)	Chain Size		Single Leg		Double Leg
(in.)	(mm)	Mfg. #	CSI Ref. #	Weight Each (lbs.)	(in.)	(mm)	WLL Based on Grade 80 Chain (Ibs)*	WLL Based on Grade 100 Chain (lbs.)*	WLL Based on Grade 80 Chain 60° Sling Angle (Ibs)*	WLL Based on Grade 100 Chain 60° Sling Angle (lbs.)*
1/2W	13W	1014266	CS-07-0951	1.3	1/4	7	3,500	4,300	6,100	7,400
1/2W	13W	1014266	CS-07-0951	1.3	5/16	8	4,500	5,700	n/a	n/a
5/8	16	1014280	CS-07-0952	1.5	5/16	8	4,500	5,700	7,800	n/a
3/4W	19W	1014285	CS-07-0953	2	5/16	8	4,500	5,700	n/a	9,900
3/4W	19W	1014285	CS-07-0953	2	3/8	10	7,100	8,800	n/a	n/a
7/8W	22W	1014319	CS-07-0954	3.3	3/8	10	7,100	8,800	12,300	15,200
7/8W	22W	1014319	CS-07-0954	3.3	1/2	13	12,000	15,000	n/a	n/a
1W	26W	1014331	CS-07-0955	6.1	1/2	13	12,000	15,000	20,800	26,000
1W	26W	1014331	CS-07-0955	6.1	5/8	16	18,100	22,600	n/a	n/a
1-1/4W	32W	1014348	CS-07-0956	12	5/8	16	18,100	22,600	31,300	39,100
1-1/4W	32W	1014348	CS-07-0956	12	3/4	20	28,300	35,300	n/a	n/a
1-1/2W	38W	1014365	CS-07-0957	18.6	3/4	20	28,300	35,300	49,000	61,100
1-1/2W	38W	1014365	CS-07-0957	18.6	7/8	22	34,200	42,700	n/a	n/a
1-3/4	44	1014388	CS-07-0958	25.2	7/8	22	n/a	n/a	59,200	n/a
1-3/4	44	1014388	CS-07-0958	25.2	1	26	47,700	n/a	n/a	n/a
2	51	1014404	CS-07-0959	37	1	26	n/a	n/a	82,600	n/a
2	51	1014404	CS-07-0959	37	1-1/4	32	72,300	n/a	n/a	n/a
††2-1/4	††57	1014422	CS-07-0960	54.1	1-1/4	32	n/a	n/a	125,200	n/a

* Chain slings require that the Minimum Ultimate Load be 4 times the Working Load Limit. Refer to page 137 to determine products actual Ultimate Load. Proof Test Load equals or exceeds the requirement of ASTM A952(8.1) and ASME B30.9-1.4 for the chain size and number of legs. ††Welded Master Link.

A-342 Alloy Master Link Dimensions

Crosby A-342 Alloy Master Link

Size		Dimensions (in.)
(in.)	(mm)	A	B	C	Deformation Indicator
1/2W	13W	0.62	2.8	5	3.5
5/8	16	0.62	3	6	3.5
3/4W	19W	0.73	3.2	6	4
7/8W	22W	0.88	3.75	6.38	4.5
1W	26W	1.1	4.3	7.5	5.5
1-1/4W	32W	1.33	5.5	9.5	7
1-1/2W	38W	1.61	5.9	10.5	7.5
1-3/4	44	1.75	6	12	7.5
2	51	2	7	14	9
††2-1/4	††57	2.25	8	16	n/a

A-345 Master Link Assembly
with Engineered Flatfor use with S-1325A coupler link.

Size		Mfg. #	CSI Ref. #	Weight Each (lbs.)	Chain Size		Three and Four Leg Sling
(in.)	(mm)	Mfg. #	CSI Ref. #	Weight Each (lbs.)	(in.)	(mm)	WLL Based on Grade 80 Chain 60° Sling Angle (Ibs)*	WLL Based on Grade 100 Chain 60° Sling Angle (Ibs)*
3/4W	19W	1014739	CS-07-0961	3.5	1/4	7	9,100	11,200
7/8W	22W	1014742	CS-07-0962	4.8	5/16	8	11,700	14,800
1W	26W	1014766	CS-07-0963	9.3	3/8	10	18,400	22,900
1-1/4W	32W	1014779	CS-07-0964	15.8	1/2	13	31,200	39,000
1-1/2W	38W	1014807	CS-07-0965	34.1	5/8	16	47,000	58,700
1-3/4	44	1014814	CS-07-0966	46.7	3/4	20	73,500	n/a
2	51	1014832	CS-07-0967	67.2	7/8	22	88,900	n/a
2-1/2	64	1014850	CS-07-0968	142	1	26	123,900	n/a
2-3/4	70	1014859	CS-07-0969	196	1-1/4	32	187,800	n/a

Size		Dimensions (in.)								Engineered Flat for S-1325 (in.)-(mm)
(in.)	(mm)	A	B	C	D	E	F	G	Deformation Indicator	Engineered Flat for S-1325 (in.)-(mm)
3/4W	19W	0.73	3.2	6	0.56	3.35	1.77	0.3	4	1/4"-5/16", 7-8mm
7/8W	22W	0.88	3.75	6.38	0.56	3.35	1.77	0.3	4.5	n/a
1W	26W	1.1	4.3	7.5	0.75	3.94	2.36	0.33	5.5	3/8", 10mm
1-1/4W	32W	1.33	5.5	9.5	1	6.3	3.54	0.51	7	1/2", 13mm
1-1/2W	38W	1.61	5.9	10.5	1.25	7.09	3.94	0.65	7.5	5/8", 16mm
1-3/4	44	1.75	6	12	1.38	8	5	0.73	7.5	3/4", 20mm
2	51	2	7	14	1.5	9	5.75	n/a	9	No Flat
2-1/2	64	2.5	8	16	2	14	7	n/a	n/a	No Flat
2-3/4	70	2.75	9.5	16	2.25	16	8	n/a	n/a	No Flat

* Chain slings require that the Minimum Ultimate Load be 4 times the Working Load Limit.

Grade 100 Alloy Master Links

Crosby A-1342N Alloy Master Links

Alloy Steel - Quenched and Tempered.
Individually proof tested to values shown with certification.
Proof tested with fixture sized to prevent localized point loading per ASTM A952.
Proof test certification shipped with each link.
All sizes are drop forged.
“Look for the Platinum Color - Crosby Grade 100 Alloy Products.”
Engineered Flat for use with S-1325A coupler link.

Size		Mfg. #	CSI Ref. #	Designation Marking	Proof Load (lbs.)	Weight Each (lbs.)	Working Load Limit (lbs.)*
(in.)	(mm)	Mfg. #	CSI Ref. #	Designation Marking	Proof Load (lbs.)	Weight Each (lbs.)	Working Load Limit (lbs.)*
1/4	6-7	1011403	CS-07-0970	X 1	17,200	1.1	8,600
5/16	8	1011412	CS-07-0971	X 2	22,800	1.7	11,400
3/8	10	1011421	CS-07-0972	X 3	35,200	2.5	17,600
1/2	13	1011430	CS-07-0973	X 4	60,000	6.2	30,000
5/8	16	1011449	CS-07-0974	X 5	90,400	10.6	45,200
3/4	19	1011458	CS-07-0975	X 6	141,200	18.8	70,600
7/8	22	1011467	CS-07-0976	X 7	170,800	28.8	85,400

* Minimum Ultimate Load is 4 times the Working Load Limit.