Boat Accessories and Supplies
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Seachoice Square U 3/8-16 x 2-1/16 x 7-7/8 57341
Seachoice
$8.49 $7.61Seachoice Square U 3/8-16 x 2-1/16 x 7-7/8 57341 Made of galvanized steelInclude nuts and lock washersCovers most U-Bolt applicationsOne per card or in bulk.- Part Number:
- 50-57341
- Availability:
- In Stock - Ships same or next business day.
- Thread:
- 3/8"-16
- A:
- 2-1/16"
- B:
- 7-7/8"
- C:
- 4"
- Type:
- SQ
- For:
- Guide On Assemblies
$8.49 $7.61 -
Seachoice Square U 3/8-16 x 2-1/16 x 7-7/8 Bulk 57340
Seachoice
$16.39 $5.25Seachoice Square U 3/8-16 x 2-1/16 x 7-7/8 Bulk 57340 Made of galvanized steelInclude nuts and lock washersCovers most U-Bolt applicationsOne per card or in bulk.- Part Number:
- 50-57340
- Availability:
- In Stock - Ships same or next business day.
- Thread:
- 3/8"-16
- A:
- 2-1/16"
- B:
- 7-7/8"
- C:
- 4"
- Type:
- SQ
- For:
- Guide On Assemblies
$16.39 $5.25 -
Seachoice Square U 7/16 -14 x 1-9/16 x 3-9/16 B 57200
Seachoice
$11.79 $4.77Seachoice Square U 7/16 -14 x 1-9/16 x 3-9/16 B 57200 Made of galvanized steelInclude nuts and lock washersCovers most U-Bolt applicationsOne per card or in bulk.- Part Number:
- 50-57200
- Availability:
- In Stock - Ships same or next business day.
- Thread:
- 7/16"-14
- A:
- 1-9/16"
- B:
- 3-9/16"
- C:
- 1-3/4"
- Type:
- SQ
- For:
- Axle U-Bolt Plates
$11.79 $4.77 -
Seachoice Square U 7/16-14 x 4-1/16 x 2-13/16 57241
Seachoice
$9.49 $6.84Seachoice Square U 7/16-14 x 4-1/16 x 2-13/16 57241 Made of galvanized steelInclude nuts and lock washersCovers most U-Bolt applicationsOne per card or in bulk.- Part Number:
- 50-57241
- Availability:
- In Stock - Ships same or next business day.
- Thread:
- 7/16"-14
- A:
- 4-1/16"
- B:
- 2-13/16"
- C:
- 1-3/4"
- Type:
- SQ
- For:
- Bolster Brackets for 4"
Frames 4" Frame Tie Plates
$9.49 $6.84 -
Seachoice Square U 7/16-14 x 4-1/16 x 2-13/16 B 57240
Seachoice
$6.29 $4.91Seachoice Square U 7/16-14 x 4-1/16 x 2-13/16 B 57240 Made of galvanized steelInclude nuts and lock washersCovers most U-Bolt applicationsOne per card or in bulk.- Part Number:
- 50-57240
- Availability:
- In Stock - Ships same or next business day.
- Thread:
- 7/16"-14
- A:
- 4-1/16"
- B:
- 2-13/16"
- C:
- 1-3/4"
- Type:
- SQ
- For:
- Bolster Brackets for 4"
Frames 4" Frame Tie Plates
$6.29 $4.91 -
Seachoice Square U-Bolt-1 9/16 x 3 9/16 57201
Seachoice
$8.89 $6.31Seachoice Square U-Bolt-1 9/16 x 3 9/16 57201 Made of galvanized steelInclude nuts and lock washersCovers most U-Bolt applicationsOne per card or in bulk.- Part Number:
- 50-57201
- Availability:
- In Stock - Ships same or next business day.
- Thread:
- 7/16"-14
- A:
- 1-9/16"
- B:
- 3-9/16"
- C:
- 1-3/4"
- Type:
- SQ
- For:
- Axle U-Bolt Plates
$8.89 $6.31 -
Seachoice Square U1/2-13 x 1-9/16 x 4-1/16 57401
Seachoice
$8.21 $7.71Seachoice Square U1/2-13 x 1-9/16 x 4-1/16 57401 Made of galvanized steelInclude nuts and lock washersCovers most U-Bolt applicationsOne per card or in bulk.- Part Number:
- 50-57401
- Availability:
- In Stock - Ships same or next business day.
- Thread:
- 1/2"-13
- A:
- 1-9/16"
- B:
- 4-1/16"
- C:
- 2"
- Type:
- SQ
- For:
- Axle U-Bolt Plates
$8.21 $7.71 -
Seachoice Square U1/2-13 x 1-9/16 x 4-1/16 Bulk 57400
Seachoice
$10.39 $6.07Seachoice Square U1/2-13 x 1-9/16 x 4-1/16 Bulk 57400 Made of galvanized steelInclude nuts and lock washersCovers most U-Bolt applicationsOne per card or in bulk.- Part Number:
- 50-57400
- Availability:
- In Stock - Ships same or next business day.
- Thread:
- 1/2"-13
- A:
- 1-9/16"
- B:
- 4-1/16"
- C:
- 2"
- Type:
- SQ
- For:
- Axle U-Bolt Plates
$10.39 $6.07 -
Seachoice Square U1/2-13 x 3-1/16 x 3-13/16 57431
Seachoice
$10.66 $8.38Seachoice Square U1/2-13 x 3-1/16 x 3-13/16 57431 Made of galvanized steelInclude nuts and lock washersCovers most U-Bolt applicationsOne per card or in bulk.- Part Number:
- 50-57431
- Availability:
- In Stock - Ships same or next business day.
- Thread:
- 1/2"-13
- A:
- 3-1/16"
- B:
- 3-13/16"
- C:
- 2"
- Type:
- SQ
- For:
- Axle U-Bolt Plates
$10.66 $8.38 -
Seachoice Square U1/2-13 x 3-1/16 x 3-13/16 Bulk 57430
Seachoice
$7.89 $6.41Seachoice Square U1/2-13 x 3-1/16 x 3-13/16 Bulk 57430 Made of galvanized steelInclude nuts and lock washersCovers most U-Bolt applicationsOne per card or in bulk.- Part Number:
- 50-57430
- Availability:
- In Stock - Ships same or next business day.
- Thread:
- 1/2"-13
- A:
- 3-1/16"
- B:
- 3-13/16"
- C:
- 2"
- Type:
- SQ
- For:
- Axle U-Bolt Plates
$7.89 $6.41 -
Seachoice SS Bottle Opener 32681
Seachoice
$9.99 $7.64Seachoice SS Bottle Opener 32681 Manufactured of 304 polished stainless steel, stamped and formed#8 screws included.- Part Number:
- 50-32681
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 1-1/2" W x 3" H
$9.99 $7.64 -
Seachoice SS Cable Clamp 1/4 EPDM Cushion 50-23201
Seachoice
$27.69 $18.19Seachoice SS Cable Clamp 1/4 EPDM Cushion 50-23201 Resistant to oils, acids and salt waterAll clamps have a #10 stud sizeTemperature range form -50°, to 300°,F304 Stainless Steel.- Part Number:
- 50-23201
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 1/4"
- Pack:
- 10
$27.69 $18.19 -
Seachoice SS Cable Clamps 1 1/2 EPDM Cushion 50-23281
Seachoice
$34.57 $22.40Seachoice SS Cable Clamps 1 1/2 EPDM Cushion 50-23281 Resistant to oils, acids and salt waterAll clamps have a #10 stud sizeTemperature range form -50°, to 300°,F304 Stainless Steel.- Part Number:
- 50-23281
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 1-1/2"
- Pack:
- 10
$34.57 $22.40 -
Seachoice SS Cable Clamps 1 1/4 EPDM 10 50-23271
Seachoice
$33.36 $21.66Seachoice SS Cable Clamps 1 1/4 EPDM 10 50-23271 Resistant to oils, acids and salt waterAll clamps have a #10 stud sizeTemperature range form -50°, to 300°,F304 Stainless Steel.- Part Number:
- 50-23271
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 1-1/4"
- Pack:
- 10
$33.36 $21.66 -
Seachoice SS Cable Clamps 1 3/4 EPDM Cushion 50-23291
Seachoice
$37.82 $24.39Seachoice SS Cable Clamps 1 3/4 EPDM Cushion 50-23291 Resistant to oils, acids and salt waterAll clamps have a #10 stud sizeTemperature range form -50°, to 300°,F304 Stainless Steel.- Part Number:
- 50-23291
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 1-3/4"
- Pack:
- 10
$37.82 $24.39 -
Seachoice SS Cable Clamps 1 EPDM Cushion 50-23261
Seachoice
$30.54 $19.93Seachoice SS Cable Clamps 1 EPDM Cushion 50-23261 Resistant to oils, acids and salt waterAll clamps have a #10 stud sizeTemperature range form -50°, to 300°,F304 Stainless Steel.- Part Number:
- 50-23261
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 1"
- Pack:
- 10
$30.54 $19.93 -
Seachoice SS Cable Clamps 1/2 EPDM Cushion 50-23231
Seachoice
$21.49 $14.30Seachoice SS Cable Clamps 1/2 EPDM Cushion 50-23231 Resistant to oils, acids and salt waterAll clamps have a #10 stud sizeTemperature range form -50°, to 300°,F304 Stainless Steel.- Part Number:
- 50-23231
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 1/2"
- Pack:
- 10
$21.49 $14.30 -
Seachoice SS Cable Clamps 2 1/2 EPDM (10 50-23311
Seachoice
$54.11 $36.52Seachoice SS Cable Clamps 2 1/2 EPDM (10 50-23311 Resistant to oils, acids and salt waterAll clamps have a #10 stud sizeTemperature range form -50°, to 300°,F304 Stainless Steel.- Part Number:
- 50-23311
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 2-1/2"
- Pack:
- 10
$54.11 $36.52 -
Seachoice SS Cable Clamps 3 EPDM Cushion 50-23321
Seachoice
$65.29 $44.47Seachoice SS Cable Clamps 3 EPDM Cushion 50-23321 Resistant to oils, acids and salt waterAll clamps have a #10 stud sizeTemperature range form -50°, to 300°,F304 Stainless Steel.- Part Number:
- 50-23321
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 3"
- Pack:
- 10
$65.29 $44.47 -
Seachoice SS Cable Clamps 3/4 EPDM Cushion 50-23251
Seachoice
$27.16 $17.86Seachoice SS Cable Clamps 3/4 EPDM Cushion 50-23251 Resistant to oils, acids and salt waterAll clamps have a #10 stud sizeTemperature range form -50°, to 300°,F304 Stainless Steel.- Part Number:
- 50-23251
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 3/4"
- Pack:
- 10
$27.16 $17.86
Shop the Best Boat Accessories Online
Whether you're prepping for a weekend on the water or upgrading your gear, PowerBoatSupply.com has all the boat accessories you need. From electrical components and drink holders to safety gear and dock lines, our wide selection of boat accessories ensures you're ready for anything out on the water.
We carry trusted brands like Sea-Dog Line, Seachoice, Attwood Marine, and more — offering both essential and specialized boat accessories for every type of boater. Not sure which part is right for your setup? Our team is here to help you choose the best boat accessories for your vessel and your adventures.
Browse our best-selling items below and get fast shipping, great prices, and top-rated customer service from PowerBoatSupply.com — your source for quality marine parts and accessories since 1987.