Socket wrench set 6 and 12 point, 1/4 to 1 inch square drive for marine use

IMPA: 610181-610370

Socket Wrenches 6 & 12 Point – 1/4" to 1" Square Drive

Name: Socket Wrenches 6 & 12 Point 1/4" to 1" Square Drive
Brand: ALL-K MARINE Ship Store
SKU: 610181-610370

Introducing our comprehensive range of socket wrenches, designed for the demanding marine environment. With IMPA codes 610181 to 610370, this series covers 170 individual sizes to meet every shipboard fastening need. Available in both 6-point and 12-point configurations, these sockets ensure a secure grip and efficient torque transfer for maintenance and repair tasks.

Choose from five popular square drives: 1/4" (6.35mm), 3/8" (9.5mm), 1/2" (12.7mm), 3/4" (19mm), and 1" (25.4mm). The across-flats (A/F) range spans from 5mm to 85mm (3/16" to 2"), covering both metric and imperial fasteners. Each socket is forged from chrome vanadium steel (Cr-V) and finished with a durable chrome plating for corrosion resistance. Lengths vary from 22mm to 120mm, increasing with socket size.

These sockets are essential for engine room maintenance, auxiliary machinery, deck equipment, and pipe flange work. They can be used with ratchet handles, extensions, universal joints, and speed handles (IMPA 610401 series). Every specification is available for individual order and pricing – simply specify the IMPA code or provide the drive size, point type, and A/F size when inquiring.

Key Features

Six-point design provides maximum contact and prevents rounding of damaged bolts
Twelve-point design allows use in tight spaces with 30° repositioning
Chrome vanadium steel construction for high strength and durability
Chrome plated finish resists corrosion in marine environments
Metric and imperial sizes available: 5-85mm and 3/16"-2"
Individual pricing and ordering for each IMPA code (610181-610370)

Technical Specifications

All 170 IMPA codes below are stocked and quoted individually. State the IMPA code when enquiring.

1/4" (6.35 mm) Square Drive — 6 Point

IMPA Code	A/F Opening (mm)	A/F Opening (inch)	Overall Length (mm)
610181	5	—	22
610182	5.5	7/32"	22
610183	6	—	22
610184	7	9/32"	22
610185	8	5/16"	22
610186	9	11/32"	22
610187	10	—	22.5
610188	11	7/16"	22.5
610189	12	15/32"	22.5
610190	13	—	22.5
610191	14	—	22.5
610192	—	3/16"	22
610193	—	1/4"	22
610194	—	9/32"	22
610195	—	11/32"	22
610196	—	3/8"	22.5

3/8" (9.5 mm) Square Drive — 6 Point

IMPA Code	A/F Opening (mm)	A/F Opening (inch)	Overall Length (mm)
610201	6	—	27
610202	7	9/32"	27
610203	8	5/16"	27
610204	9	11/32"	29
610205	10	—	29
610206	11	7/16"	29
610207	12	15/32"	29
610208	13	—	29
610209	14	—	31.5
610210	17	21/32"	31.5
610211	19	3/4"	35
610212	21	13/16"	35
610213	22	—	35
610214	—	1/4"	27
610215	—	9/32"	27
610216	—	11/32"	29
610217	—	3/8"	29

3/8" (9.5 mm) Square Drive — 12 Point

IMPA Code	A/F Opening (mm)	A/F Opening (inch)	Overall Length (mm)
610221	10	—	29
610222	11	7/16"	29
610223	12	15/32"	29
610224	13	—	29
610225	14	—	29
610226	14.5	—	31.5
610227	15	19/32"	31.5
610228	16	5/8"	31.5
610229	17	21/32"	31.5
610230	17.5	11/16"	31.5
610231	19	3/4"	35
610232	21	13/16"	35
610233	22	—	35
610234	23	—	35
610235	—	1/2"	31
610236	—	17/32"	31.5
610237	—	13/16"	35
610238	—	7/8"	35

1/2" (12.7 mm) Square Drive — 6 Point

IMPA Code	A/F Opening (mm)	A/F Opening (inch)	Overall Length (mm)
610241	8	5/16"	35
610242	9	11/32"	35
610243	10	—	35
610244	11	7/16"	35
610245	12	15/32"	35
610246	13	—	35
610247	14	—	35
610248	15	19/32"	35
610249	16	5/8"	36
610250	17	21/32"	37
610251	18	—	37
610252	19	3/4"	38
610253	20	25/32"	38
610254	21	13/16"	39
610255	22	—	40
610256	23	—	41
610257	24	—	41
610258	26	—	44
610259	27	1-1/16"	44
610260	28	—	44

1/2" (12.7 mm) Square Drive — 12 Point

IMPA Code	A/F Opening (mm)	A/F Opening (inch)	Overall Length (mm)
610266	8	5/16"	36
610267	9	11/32"	36
610268	10	—	36
610269	11	7/16"	36
610270	12	15/32"	36
610271	13	—	36
610272	14	—	36
610273	14.5	—	36
610274	15	19/32"	36
610275	16	5/8"	36
610276	17	21/32"	38
610277	17.5	11/16"	38
610278	18	—	38
610279	19	3/4"	38
610280	20	25/32"	38
610281	21	13/16"	38
610282	22	—	40
610283	23	—	40
610284	24	15/16"	40
610285	26	—	42.5

1/2" (12.7 mm) Square Drive — Additional Sizes

IMPA Code	A/F Opening (mm)	A/F Opening (inch)	Overall Length (mm)
610261	29	1-1/8"	44
610262	30	—	47
610263	32	1-1/4"	47
610286	27	1-1/16"	42.5
610287	28	—	43
610288	29	1-1/8"	44
610289	30	—	46
610290	32	1-1/4"	46
610291	33	—	46
610292	—	11/32"	35
610293	—	3/8"	35
610294	—	1/2"	35
610295	—	13/16"	39
610296	—	7/8"	40
610297	—	1"	44
610298	—	1-1/8"	44

3/4" (19 mm) Square Drive — 6 Point

IMPA Code	A/F Opening (mm)	A/F Opening (inch)	Overall Length (mm)
610301	19	3/4"	50
610302	21	13/16"	50
610303	22	—	50
610304	23	—	50
610305	24	—	50
610306	26	—	53
610307	27	1-1/16"	53
610308	29	1-1/8"	56
610309	30	—	56
610310	32	1-1/4"	56
610311	35	1-3/8"	58
610312	36	—	58
610313	38	1-1/2"	60
610314	41	—	63
610315	46	1-13/16"	65
610316	50	—	70

3/4" (19 mm) Square Drive — 12 Point

IMPA Code	A/F Opening (mm)	A/F Opening (inch)	Overall Length (mm)
610321	19	3/4"	50
610320	20	—	47.5
610322	21	13/16"	50
610323	22	—	50
610324	23	—	50
610325	24	—	50
610326	26	—	53
610327	27	1-1/16"	53
610328	29	1-1/8"	56
610329	30	1-3/16"	56
610330	32	1-1/4"	56
610331	35	1-3/8"	58
610332	36	—	58
610333	38	1-1/2"	60
610334	41	—	63
610335	46	1-13/16"	65
610336	50	—	58
610337	54	2-1/8"	58
610338	55	—	60
610339	58	—	63
610340	60	—	65
610341	—	1-5/16"	56
610342	—	1-7/16"	58
610343	—	1-5/8"	63
610344	—	1-3/4"	65
610345	—	1-7/8"	67
610346	—	2"	70

1" (25.4 mm) Square Drive — 12 Point

IMPA Code	A/F Opening (mm)	A/F Opening (inch)	Overall Length (mm)
610351	32	1-1/4"	67
610352	35	1-3/8"	67
610353	36	—	67
610354	38	1-1/2"	70
610355	41	—	73
610356	46	1-13/16"	78
610357	50	—	82
610358	54	2-1/8"	85
610359	55	—	85
610360	58	—	88
610361	60	—	90
610362	63	—	95
610363	65	—	95
610364	67	—	100
610365	70	—	105
610366	71	—	105
610367	75	—	110
610368	77	—	110
610369	80	—	115
610370	85	—	120

Frequently Asked Questions

What is the difference between 6-point and 12-point sockets?

6-point sockets have a larger contact area, reducing the chance of slipping and rounding off fasteners. They are ideal for high torque applications and damaged bolts. 12-point sockets have more positions (every 30°) for engagement, making them useful in confined spaces where rotation is limited.

Are these sockets available in both metric and imperial sizes?

Yes, the A/F range covers 5mm to 85mm (metric) and 3/16" to 2" (imperial), so you can find the exact size needed for your fasteners.

Can I order a single socket or only full sets?

Each socket is available for individual order. You can purchase just the specific size and drive you need, which is convenient for replacements or specialized tasks.

How do I identify the correct IMPA code for a socket?

IMPA codes range from 610181 to 610370. When ordering, provide the IMPA code or specify the drive size, point type, and A/F size. Our team can help you find the correct code.

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