Spars, Rigging, and Hardware for Sailboats

Rig-Rite, Inc.
Phone: (001) 401-739-1140 -- FAX: (001) 401-739-1149
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Stemball / Eye Adapters


Masthead Stemball / Eyes
Stemball / Eye Adapters (Stemball / Eyes) are used on Mastheads made by Isomat, FranceSpar, Sparcraft and other Spar builders for attachment of the Headstay and Backstay. Made from type 316 SS, All Stemball / Eye Adapters incorporate a Cup Washer. Used with a Toggle, they offer superior articulation and more connection options than standard Stemballs. They should always be used on a Headstay and are required for use with all furling systems. Used on the Backstay, in addition to improved toggling action, they simplify installation of Insulators.
See, for example, Isomat NG1 and NG2 Mastheads.

For other Masthead attachments, See: Masthead & Forestay Toggles.
See also T-Ball Eyes, Tangs Main Page.
 

NG1 Stemball / Eye Adapters
NG1 Stemball / Eye Adapters have a 26mm (>1") head diameter (including integral Cup Washer), and are available with Pin sizes from 3/8" - 1/2" (10mm-12mm).
 
NG1 Stemball / Eye Adapter for 3/8" (10mm) Pin: NG1-SBE-6:
NG1 Stemball / Eye has a hole for a 3/8" or 10mm Pin. Length from base of Stemball to Pin center is 4" (100mm)Stem diameter is 11mm. NG1 Stemball / Eye Adapters have a 26mm (>1") head diameter. Use ith 3/8" Double Jaw Toggle, below. o

 

 
NG1 Stemball / Eye Adapter for 7/16" Pin: NG1-SBE-7:
Short NG1 Stemball / Eye Adapter for 7/16" Pin: NG1-SBE-7S:
NG1 Stemball / Eye has a hole for a 7/16" or 11mm Pin. Length from base of Stemball to Pin center is 4" (100mm), Stem diameter is 11mm. Special Short unit is 3 1/4" (85mm) from base of Stemball to Pin center. NG1 Stemball / Eye Adapters have a 26mm (>1") head diameter. Use with 7/16" Double Jaw Toggle, below. oo

 

NG1 Stemball / Eye Adapter for 1/2" Pin, 1/4" wire: NG1-SBE-8:
Long NG1 Stemball / Eye Adapter for 1/2" Pin, 1/4" wire: NG1-SBE-8L:
NG1 Stemball / Eye has a hole for a 1/2" or 12mm Pin and is suitable for wire up to 1/4" or 6mm. Length from base of Stemball to Pin center is 3 1/2" (90mm), Stem diameter is 12.5mm. Special Long unit is 4 1/4" (108mm) from base of Stemball to Pin center. NG1 Stemball / Eye Adapters have a 26mm (>1") head diameter. Use with 1/2" Double Jaw Toggle, below. on

 

 
NG1 Stemball / Eye Adapter for 1/2" Pin, 9/32" wire: NG1-SBE-8H:
Short NG1 Stemball / Eye Adapter for 1/2" Pin, 9/32" wire: NG1-SBE-8HS:
Heavy-duty NG1 Stemball / Eye has a hole for a 1/2" or 12mm Pin and is suitable for wire up to 9/32" or 7mm. Length from base of Stemball to Pin center is 4" (100mm), Stem diameter is 14mm. Special Short unit is 2 1/2" (64mm) from base of Stemball to Pin center. NG1 Stemball / Eye Adapters have a 26mm (>1") head diameter. Use with 1/2" Double Jaw Toggle, below.

  

 

 

 

Double Jaw Toggle w/ 3/8" Pins: DJT-6:
Double Jaw Toggle w/ 7/16" Pins: DJT-7:
Double Jaw Toggle w/ 1/2" Pins: DJT-8:
Type 316 SS Double Jaw Rigging Toggles, as used with Stemball / Eye Adapters, are available separately.
3/8" - Length between Pin centers is 1 3/4" (45mm)
7/16" - Length between Pin centers is 1 7/8" (48mm)
1/2" - Length between Pin centers is 2 1/8" (55mm)

 

 

NG2 Stemball / Eye Adapters
Standard NG2 Stemball / Eye Adapters have a 34mm (<1 3/8") head diameter (including integral Cup Washer), and are available with Pin sizes from 1/2" - 3/4" (12mm-19mm).
 

NG2 Stemball / Eye Adapter for 1/2" Pin, 9/32" wire: NG2-SBE-8:
NG2 Stemball / Eye has a hole for a 1/2" or 12mm Pin and is suitable for wire up to 9/32" or 7mm. Length from base of Stemball to Pin center is 4 1/2" (115mm), Stem diameter is 14mm. SS NG2 Stemball / Eye Adapters have a 34mm (<1 3/8") head diameter. Use with 1/2" Double Jaw Toggle, below. o

 

 
NG2 Stemball / Eye Adapter for 1/2" Pin, 5/16" wire: NG2-SBE-8H:
Long NG2 Stemball / Eye Adapter for 1/2" Pin, 5/16" wire: NG2-SBE-8HL:

Heavy-duty NG2 Stemball / Eye has a hole for a 1/2" or 12mm Pin and is suitable for wire up to 5/16" or 8mm. Length from base of Stemball to Pin center is 4 3/4" (120mm), Stem diameter is 16mm. Special Long unit is 5 1/2" (108mm) from base of Stemball to Pin center. SS NG2 Stemball / Eye Adapters have a 34mm (<1 3/8") head diameter. Use with 1/2" Double Jaw Toggle, below. an

 

 

NG2 Stemball / Eye Adapter for 5/8" Pin: NG2-SBE-10:
Long NG2 Stemball / Eye Adapter for 5/8" Pin: NG2-SBE-10L:
NG2 Stemball / Eye has a hole for a 5/8" or 16mm Pin and is suitable for wire up to 3/8" or 10mm. Length from base of Stemball to Pin center is 5 3/4" (120mm), Stem diameter is 18mm. Special Long unit is 6 1/8" (108mm) from base of Stemball to Pin center. SS NG2 Stemball / Eye Adapters have a 34mm (<1 3/8") head diameter. Use with 5/8" Double Jaw Toggle, below. da

 

 


NG2 Stemball / Eye Adapter for 3/4" Pin, 12mm wire: NG2-SBE-12:
NG2 Stemball / Eye has a hole for a 3/4" or 19mm Pin and is suitable for wire up to 12mm. Length from base of Stemball to Pin center is 6 1/8" (155mm), Stem diameter is 20mm. SS NG2 Stemball / Eye Adapters have a 34mm (<1 3/8") head diameter. Use with 3/4" Double Jaw Toggle, below. o

 

 

NG2 Stemball / Eye Adapter for 3/4" Pin, 1/2" wire: NG2-SBE-12H:
Heavy-duty NG2 Stemball / Eye has a hole for a 3/4" or 19mm Pin and is suitable for wire up to 1/2". Length from base of Stemball to Pin center is 6" (150mm), Stem diameter is 20mm. SS NG2 Stemball / Eye Adapters have a 34mm (<1 3/8") head diameter. Use with 3/4" Double Jaw Toggle, below. o

 

 

 

 

Double Jaw Toggle w/ 1/2" Pins: DJT-8:
Double Jaw Toggle w/ 5/8" Pins: DJT-10:
Double Jaw Toggle w/ 3/4" Pins: DJT-12:
Type 316 SS Double Jaw Rigging Toggles, as used with Stemball / Eye Adapters, are available separately.
1/2" - Length between Pin centers is 2 1/8" (55mm)
5/8" - Length between Pin centers is 2 1/2" (65mm)
3/4" - Length between Pin centers is 2 3/8" (60mm)

 

 

NG2 Stemball / Eye Adapters w/ Removable Head
Special NG2 Stemball / Eye Adapters have a Removable, threaded, 34mm (<1 3/8") diameter head and Cup Washer, secured with a cotter pin. Used in special applications where the eye portion of a standard Stemball / Eye Adapter is not able to pass through the seating hole.
 
Special NG2 Stemball / Eye Adapter for 5/8" (16mm) Pin: NG2-SBE-10R:
Special NG2 Stemball / Eye Adapter for 3/4" (19mm) Pin: NG2-SBE-12R:
Special SS NG2 Stemball / Eye Adapters have a 34mm (<1 3/8") diameter Removable head. Length from base of Stemball to Pin center is 5 7/8" (150mm). Use with 5/8" or 3/4" Double Jaw Toggle, above.

 

 

 

 

 


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